Mj\u00f8sta\u030arnet, the world\u2019s tallest wooden skyscraper. Photograph: Voll Arkitekter\/Ricardo Foto<\/p>\n
I travelled to Oslo in the early autumn. It felt like arriving into the future. Or, at least, a fragment of a possible future. I drove north in the quiet digital bubble of my electric rental car. In 2024, Norway became the first country in the world where electric cars outnumbered petrol cars<\/a>.<\/p>\n A smooth, pristine motorway unfolded between farmlands and low hillsides of dense green forest. Long tunnels carried the route up above the banks of Lake Mj\u00f8sa, Norway\u2019s largest lake. After a little more than an hour, the road curved downward to run parallel to the lakeshore.<\/p>\n Through gaps in a line of golden birch trees, a tall, slim structure broke the horizon. It rose from the water\u2019s edge, topped by a triangular crown of bare, interlocking beams. Against the heavy grey sky and the enfolding mist, it radiated a gentle warmth from its pale burnt-orange exterior. The only building of any height anywhere in the surrounding landscape, it is known as Mj\u00f8sta\u030arnet, the \u201cTower of Mj\u00f8sa\u201d: an 18-storey, 277ft (84m)-high wooden skyscraper. The tallest all-timber building in the world.<\/p>\n Mj\u00f8sta\u030arnet occupies a slice of shoreline next to the small town of Brumunddal. It incorporates offices, apartments, and a 72-two-room hotel. I was staying on the 11th floor, and I rode up in an elevator shaft fabricated entirely of wood (although the elevator cabin itself was made of steel and glass).<\/p>\n The interior of Mj\u00f8sta\u030arnet. Photograph: Voll Arkitekter<\/p>\n Two sides of my corner room had large picture windows, one looking west across the lake and the other north along the shore. There were wooden floors throughout, wooden tables and lamps, a wooden bed, and pair of low swivel chairs formed out of thin slats of bent pinewood.<\/p>\n Most striking of all was the huge wooden column that formed both the corner piece of the room and \u2013 extending in segments above and below me \u2013 one of the four edge-points of the whole tower. It looked reassuringly sturdy, as if it were the trunk of a massive tree that had been stripped of its bark and worked into a smoothed organic approximation of a geometric strut of steel or concrete. Which is almost exactly the case: except that it is not just one tree but many \u2013 a series of blocks of timber that are precision cut and then pressed and held together using extremely strong glue, creating what is known as mass timber, or glulam (short for \u201cglued laminated timber\u201d).<\/p>\n The piece in my room was the largest of its kind in the building, its cross-section measuring some 2ft wide by 5ft (0.6m by 1.5m) long. Although coated in a pale wax laminate, you could still see the unique knots and whorls running across its composite slices of wood.<\/p>\n Through the window, mist slipped in waves down the forested slopes of the far shore. Gusts of wind blew fine rain against the glass. Inside, there was no sound. The view shifted from white, to grey, to the encroaching blue of night. Eventually I settled down to sleep in what, I realised then, amounted to something of a childhood fantasy \u2013 a giant treehouse in the sky.<\/p>\n Mj\u00f8sta\u030arnet began its life as a sketch on a napkin. Two rectangular boxes marked out in blue ballpoint pen: one lying flat, the other standing on end, on top of the first. The actual finished structure is not far removed from this original draft \u2013 except that the second rectangle kept elongating farther and farther upward. \u201cHeight was very important here,\u201d Arthur Buchardt, the developer who drew this sketch, told me. \u201cIt had to be a signal. To show what is possible. And I think now it has made a lot of people wake up.\u201d<\/p>\n I met Buchardt the day after my arrival, on the 18th floor of the tower, where he keeps his own penthouse apartment. Now in his late 70s, he has the look of a Bond villain \u2013 tall, broad, vigorously healthy, perfectly bald \u2013 and the demeanour of a favoured great-uncle, quick to laugh and possessed of a twinkling, boyish enthusiasm. We sat at his living room table \u2013 wooden, of course \u2013 drinking black coffee and looking out through the floor-to-ceiling windows that form the entire western face of the penthouse.<\/p>\n All of the wood, Buchardt told me, gesturing around the apartment, and more generally at the whole building, came from the immediate landscape. In the centre of the room was an L-shaped pillar of grey marble containing a gas fire. That stone, he said, was taken from the surrounding hills. Even the art on the walls was local. \u201cSo this was a political statement,\u201d he said. \u201cTo use all this local material.\u201d<\/p>\n Buchardt moved to Brumunddal as a boy and spent most of his teenage years in the town. After graduating in business \u2013 studying at Oslo and Edinburgh universities \u2013 he returned to take over his father-in-law\u2019s plumbing company. In a few years he sold it on, using the proceeds to move into property development, and then, when the 1994 Winter Olympics came to Lillehammer and the town needed brand-new accommodation for athletes and visitors, he built his first hotel. He has built 23 more since, all across Scandinavia. And, increasingly, he has built them out of wood.<\/p>\n \u201cAbout 10 years ago I had to wake up a little bit myself. About the importance of the environment, about what we are doing to it,\u201d he told me. It was the announcement of the Paris climate agreement in December 2015 \u2013 with its transnational pledge to reduce global emissions and shift toward net zero emissions \u2013 that prompted Buchardt into action. \u201cPoliticians talked about the need for a \u2018great green change\u2019. And I thought, how can I answer those political signals?\u201d All he really knew how to do was make buildings. But what if he made them differently?<\/p>\n \u201cIt was right then, in 2015, that I put some drawings on this napkin. And I took it to an architect\u201d \u2013 the Trondheim-based firm Voll Arkitekter \u2013 \u201cand asked them, \u2018How big is it possible to go with a high-rise wooden building?\u2019 Because you can\u2019t make large modern structures without steel or concrete entirely. But you can reduce how much you use. You can reduce that a lot.\u201d<\/p>\n The view from the top of Mj\u00f8sta\u030arnet. Photograph: 360Cities.net\/Alamy<\/p>\n This is the thing about concrete. Not only is the world running short of the sand we need to make it \u2013 and having to consider extreme alternatives to meet demand, from removing and crushing entire mountaintops to dredging Greenland\u2019s silt-plugged fjords \u2013 but its intensifying use also causes spiralling feedback loops. The built environment accounts for 37% of all global emissions, coming from the combination of the construction process itself and the energy required for heating, lighting and maintaining buildings over time. Between 7 and 8% of these total emissions are from concrete manufacturing alone. Since 1960, concrete use in construction has grown tenfold. Less than 1% of this concrete is produced from recycled materials. Instead, we just keep making more and more of it, requiring more and more sand \u2013 a projected 50% more by 2060 around the globe.<\/p>\n In effect, almost all of our modern towns and cities are formed out of materials that have been extracted, smelted, superheated or synthesised through the intensive use of fossil energy. Cities are, literally, monuments to extraction and emissions, the focused expressions of mining, burning, melting, sintering and moulding the mineral contents of the Earth. It would be hard to invent a more efficient machine for the concentrated emission of CO2 if you tried.<\/p>\n But what if you imagine replacing the superstructure of our homes and workplaces and offices \u2013 even our high-rises \u2013 with wood? Trees take carbon dioxide out of the atmosphere and store it inside their bodies. Cut them down, and they retain the CO2 rather than releasing it. Build with them, and they still keep holding that carbon. When you fabricate a typical mid-rise building out of steel and concrete, its construction alone generates around 1,500 to 2,000 metric tons of carbon dioxide emissions. That same building, when made out of wood, sequesters anything from 600 to 1,000 metric tons of CO2. And that is before you even factor in the additional absorption that comes with the planting and regrowth of the harvested trees.<\/p>\n For just one building, the difference is remarkable. What about an entire city? You turn dense population centres, some of the most concentrated emitters of greenhouse gases, into massive carbon sinks. You invert the equation, make buildings not part of the problem but part of the solution. You shift from a construction economy that is mineral based, requiring the ever more widespread depletion of finite resources, to one that is forest-based and endlessly renewable. Wood as an urban antidote to sand and steel and cement. From the concrete jungle to the timber city.<\/p>\n That, at least, is the vision. The reality, of course, is not quite so simple. Right now, for instance, construction with mass timber is expensive. The cost of Mj\u00f8sta\u030arnet came to around \u00a3100m. The same tower, built entirely of steel and concrete, would have been \u00a310 to \u00a315m cheaper.<\/p>\n Much of this, however, is a matter of perspective. Studies looking at the knock-on effects of global concrete production estimate that the associated damages it causes to health and the environment have a quantifiable financial value, a value that is almost equivalent to \u2013 or by some estimates may even exceed \u2013 the value of the entire concrete industry itself. A shifting, climate-focused economics can quickly change the parameters of cost efficiency. As can transparency over environmental impacts. \u201cTen years ago, I didn\u2019t read what the CO2 footprint was of a car,\u201d Buchardt said to me. \u201cNo one was that interested. Now the first thing you look at is the CO2. And I think that is how it will go with buildings.\u201d<\/p>\n Mj\u00f8sta\u030arnet, on the banks of Lake Mj\u00f8sa. Photograph: Voll Arkitekter\/Ricardo Foto<\/p>\n As he put it, \u201cwe will look at a certificate of each building, and you will see its CO2 emissions, its energy consumption, what it is made of. You will look at a particular hotel and say, you know, there\u2019s steel, there\u2019s glass, it\u2019s using so much electricity, it\u2019s like a beacon of emissions, and so you won\u2019t stay there. While those who have low-carbon-emission buildings will go to the market, and they will tell you about it. Maybe it starts as a marketing tool, but then it becomes a standardisation.\u201d<\/p>\n Brumunddal and its surrounding district of Ringsaker has always been logging country. Earlier on the morning I met Buchardt, I had visited the sawmill and factory of Moelven, a local company that has grown to become one of Scandinavia\u2019s largest wood processors, and which supplied the materials for Mj\u00f8sta\u030arnet.<\/p>\n The head of its building systems division, Rune Abrahamsen, showed me the glulam production line. He led me from huge warehouses of newly sawn and delivered timber, stacked in neat piles like bundles of giant matchsticks, to a factory floor where computer systems cut, bent, pressed and glued the wood into any shape a client required. Everywhere was redolent with the smell of pine and spruce. Finally we came to a loading bay, about the size of an aircraft hangar, where finished glulam beams wrapped in blue tarp awaited transport all across the country.<\/p>\n Rune worked as the structural engineer on Mj\u00f8sta\u030arnet \u2013 tasked with turning Buchardt\u2019s napkin drawing into a solid reality. \u201cTo be honest,\u201d he said, \u201cmy first thought when Buchardt called me about this project was \u2018Is he playing with me here, or is he for real?\u2019\u201d<\/p>\n Rune has always had a passion for timber construction. When he was a student in the 1990s, he said, everyone was focused on designing structures in concrete, steel and aluminum. \u201cAnd there were very few people studying or searching for solutions in wood. And I thought, why do I need to be like all the other 250 students that I\u2019m graduating with? Let\u2019s try something else.\u201d<\/p>\n He first began working with glulam about 30 years ago. The concept itself was actually more than a century old, but while the basic idea of cutting up logs and then gluing them together to increase stiffness and strength is the same, what has changed is the technology: the precision and speed with which you can now shape and manipulate the wood.<\/p>\n Glulam being manufactured in Germany. Photograph: Zoonar GmbH\/Alamy<\/p>\n Building high, however \u2013 as high as Buchardt wanted Mj\u00f8sta\u030arnet to go \u2013 was something that no one had tried before. Timber buildings, Rune explained, are very light compared to concrete and steel structures. \u201cAnd remember that buildings are vertical cantilevers. So when the wind blows at the top, it multiplies the forces, creating horizontal accelerations higher up.\u201d It is, he said, like being in the crow\u2019s nest at the top of a ship\u2019s mast. Down on the deck, you may only feel the gentle rocking of the sea. Up on the mast, however, every pitch and roll becomes hugely amplified. Structurally, the wood can handle these forces easily \u2013 but those people actually staying on the higher floors might not.<\/p>\n To dampen the sway and remove the risk of \u201csea sickness\u201d they had to weigh the building down \u2013 turning, in the end, to laying layers of concrete on the decks of the upper floors. This was a fraction of what most tall tower blocks would use, and the minimum they needed to meet \u201ccomfort\u201d standards, but it was still there, nonetheless.<\/p>\n For the construction of the building itself, they used a novel and untested assembly technique. The hundreds of glulam beams, columns and trusses that formed the superstructure were processed and shaped to millimetre accuracy at the nearby factory, and then transported individually to the site without any trial fitting. In effect, Mj\u00f8sta\u030arnet was like a flat-pack skyscraper, its simple timber skeleton rapidly rising piece by piece and floor by floor \u2013 at the rate of almost one floor per week \u2013 all installed by a tower crane, with no need for any external scaffolding. Far faster than building with concrete.<\/p>\n Mj\u00f8sta\u030arnet under construction. Photograph: \u00d8ystein Elgsaas<\/p>\n With an all-timber structure, Rune said, there is one question that everyone asks: What if it catches on fire? From the spark that ignited and then consumed the \u201cforest\u201d of roof beams in Notre Dame Cathedral in 2019 to the great conflagrations in cities throughout history, wood\u2019s capacity to burn is a major reason it has been largely phased out as a modern urban building material.<\/p>\n \u201cMost people would think that this is a catastrophic thing to do,\u201d Rune said, \u201cto build such a tall timber building. But probably it is about the most fire-safe building in Norway.\u201d The glulam had to undergo rigorous testing. \u201cWe made samples that we took to a fire laboratory in Trondheim. We burnt the glulam columns \u2013 and they do burn, but eventually they stop burning. It\u2019s like if you go to the woods and you make a bonfire and you put a big log on late in the night. You go to sleep, and then the next morning, everything around the outside of the log is gone, the bark and such, and the log itself is deeply charred, but it\u2019s still solid. So if a column in the building burns, it chars the surface but that charring protects the inside \u2013 and it is still strong enough to carry the load of the building.\u201d<\/p>\n In this respect, Mj\u00f8sta\u030arnet has received a rather ringing endorsement. Norway\u2019s largest insurance company insures the building \u2013 and also takes up two of its office floors. \u201cYou can prove as an engineer and a manufacturer that something is going to be safe,\u201d Rune said, \u201cbut you need to have the insurance company with you.\u201d<\/p>\n If you want to scale up the number of mass-timber buildings to replace concrete and steel, you have to substantially increase the number of trees you cut down. The wood for Mj\u00f8sta\u030arnet was produced by harvesting more than 16,000 spruce and pine trees from the forests that surround Brumunddal. Given that the world has lost one-third of its forests since the end of the last ice age, with half of this loss occurring in the last century alone, it isn\u2019t surprising that for some, the prospect of removing even more trees is alarming. As a 2018 open letter from a consortium of US environmental groups put it to the mayor of Portland, Oregon, the increased demand for mass timber \u201cmay provide a perverse incentive to shorten logging rotations and more aggressively clearcut\u201d.<\/p>\n Rune, for his part, seemed acutely aware of this tension. \u201cFor wood to be a good part of the solution, you need to take into consideration that you\u2019re not harvesting more from the forest than actually grows back.\u201d Currently, he said, for every tree cut, they plant two more.<\/p>\n A rendering of the planned W350 tower in Tokyo. Photograph: Sumitomo Forestry Co<\/p>\n \u201cHere, in our part of Scandinavia, it takes about 80 years for a tree to grow. But we have enormous amounts of forest. So, even though our industry has expanded a lot in recent years, we\u2019re still only harvesting about 30% of the annual growth. We\u2019re still getting more and more trees, even though we are harvesting more. There\u2019s a big scalability within the resource right now.\u201d<\/p>\n This, ultimately, was Buchardt\u2019s goal with Mj\u00f8sta\u030arnet \u2013 to make it \u201cjust the beginning of bigger wooden buildings\u201d. He was, he said, already working on an even taller all-wood building in Sweden. At the same time, the urban developer Atrium Ljungberg had recently announced the construction of Stockholm Wood City, a new 250,000 sq metre neighbourhood of offices, homes, shops and apartments, all created out of timber. In Winterthur, Switzerland the 100-metre-tall wooden \u201cRocket<\/a>\u201d apartment block is soon to arrive on the skyline, while in Perth in Western Australia a project is under way to almost double that height again, with a 191-metre-high \u201chalf-wood<\/a>\u201d tower.<\/p>\n Similar developments are cropping up all across Europe<\/a>, North America and Asia. Most ambitious of all is the Japanese timber company Sumitomo Forestry\u2019s master plan for a 350-metre-high wooden skyscraper. When completed, sometime around 2041, it will become not only the tallest wooden building in the world (by some distance) but also the tallest building of any kind in Japan.<\/p>\n Buchardt was going to Helsinki the following week, to give a speech. He opened his notebook \u2013 he does not use computers if at all possible, he said \u2013 and showed me the title he had chosen, which he had written out in English: \u201cHow difficult is it to make things easy?\u201d It was going to be about Mj\u00f8sta\u030arnet, and wood \u2013 about using local materials, local people, local expertise. More broadly, I asked, was it about climate change? We know the basic equation; we know what drives emissions \u2013 we know that extraction underpins all of our lives. That\u2019s easy. What we don\u2019t seem to know, fundamentally, is how to change that.<\/p>\n In response, he took me to the corridor of the penthouse and showed me a framed original manuscript by a famous Norwegian poet, author and musician, Alf Pr\u00f8ysen, who was born near Brumunddal in 1914. It included some lines from Pr\u00f8ysen\u2019s most celebrated folk song, A Day Tomorrow. Buchardt offered me a rough translation. \u201cYou shall have a day tomorrow,\u201d he said, \u201cthat stands clean and unused; with blank white sheets and fresh new crayons; and you can correct the errors of the day before; and you\u2019ll face tomorrow\u2019s evening with joy.\u201d<\/p>\n The sentiment is clear. That there is always a chance to start anew, to make amends, to try again. Either in your own life, or from one generation to the next. The problem now, of course, is that the sheet is not blank, nor clean nor unused. It bears the inky stain of the last few centuries \u2013 the still-fast-accumulating, unerasable errors of the day before.<\/p>\n Later that afternoon, I drove to the far side of the lake and hiked up through an old forest of spruce and Scots pine. From a clearing at the top of the hill I could see Mj\u00f8sta\u030arnet on the far shore \u2013 soft, wooden, rooted. A tower envisioned as the concentrated expression of this landscape. Or this landscape, as it is for now.<\/p>\n Rune said that the forest environment in Norway was changing. As the weather warmed, the treeline was moving higher up the mountain slopes, offering even greater space for growing. But at the same time, they were experiencing more landslides and wildfires. The rising temperatures were also bringing new species, new insects, into the region, including spruce beetles, which can cause huge damage across large areas of forestry.<\/p>\n Perhaps the reason it is \u201cdifficult to make things easy\u201d is because we are always trying to fix ourselves in place and in time, while the environment \u2013 eroding, prograding, warming, waning \u2013 continually migrates all around us. It is the story of sand, forests, deserts, ice and glaciers too. When we build, we think we are looking to the future. But really, we are always drawing from the past. Making our homes from centuries-old trees or millennia-old sand \u2013 all powered by eons-old fossils.<\/p>\n Adapted from The Vanishing Earth: A Journey Through the Last Days of Abundance<\/a>, which will be published by Scribe on 10 September.<\/p>\n Listen to our podcasts here<\/a> and sign up to the long read weekly email here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"Mj\u00f8sta\u030arnet, the world\u2019s tallest wooden skyscraper. 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