Call it a fun house.

High above Lower Manhattan, a Tribeca penthouse that swaps elevators for a far more playful ride is searching for its next owner.

The sprawling residence atop the landmarked building at 150 Nassau St. has hit the market for $20 million, according to an eye-catching StreetEasy update, and its most attention-grabbing feature isn’t the sweeping skyline views or the size of the apartment.

A whimsical penthouse in Lower Manhattan, nicknamed “Sky House,” has hit the market for $20 million. Shannon Dupre of DD-Reps

The home is drawing attention for its most unusual feature: a four-story stainless-steel spiral slide that runs through the apartment. Shannon Dupre of DD-Reps

Instead, it’s a gleaming four-story stainless-steel slide that spirals through the center of the home, offering a quick descent between floors.

News of the listing was first reported by the Wall Street Journal.

Nick Gavin, who hold the listing with Compass, says a ride down is all but mandatory for when visitors arrive. 

The unusual residence occupies the copper-clad crown of the historic building and spans roughly 6,400 square feet, with four bedrooms arranged across multiple levels. Dramatic windows and terraces frame panoramic views of Lower Manhattan, including sightlines toward the nearby Woolworth Building.

The slide services all four floors throughout the home. Shannon Dupre of DD-Reps

The residence fills with light. Shannon Dupre of DD-Reps

The home occupies nearly 6,400 square feet. Shannon Dupre of DD-Reps

The home sits within the copper and terracotta crown of a late-19th-century building. Shannon Dupre of DD-Reps

It was transformed from a raw space after its owners, tech executives Craig and Kirsten Nevill-Manning, purchased it for about $6.45 million in 2007. Shannon Dupre of DD-Reps

The property, sometimes referred to as “Sky House,” was created after tech entrepreneur Craig Nevill-Manning and his wife, Kirsten Nevill-Manning, purchased the raw space for about $6.45 million in 2007, according to the Journal. 

What they initially acquired was essentially an unfinished shell within the top of the building. Over time, they transformed it into a highly customized residence designed to blur the lines between architecture, art and play.

To bring the vision to life, the couple hired architect David Hotson and interior designer Ghislaine Viñas, who developed a design that takes advantage of the building’s dramatic vertical volume. Rather than divide the home into traditional stacked floors, the team created a layered interior connected by staircases, glass bridges and open spaces that allow light to travel throughout the apartment.

“It’s not often that you have a client that is leading with such a dazzling idea,” Hotson told the Journal. “It was pretty irresistible.”

Designed by architect David Hotson with interiors by Ghislaine Viñas, the multi-level residence blends playful elements, like the slide, a rope swing, rock-climbing column and hidden ladders. Shannon Dupre of DD-Reps

A view of the layout. Shannon Dupre of DD-Reps

The end of the slide. Shannon Dupre of DD-Reps

While the quirky layout may not suit every buyer, the listing agent hopes it will appeal to someone who sees the property as a livable work of art rather than a typical luxury apartment. Shannon Dupre of DD-Reps

A dining space. Shannon Dupre of DD-Reps

Art installations are seen throughout the home. Shannon Dupre of DD-Reps

The polished metal slide became the centerpiece of the design. Positioned in the middle of the home, it winds down through multiple levels like a sculptural installation while also serving as a functional shortcut. The playful element quickly became the defining feature of the property, offering a whimsical contrast to the sleek modern architecture surrounding it.

Other unconventional touches were incorporated throughout the apartment. The owners added features such as climbing elements and ladders that connect levels in unexpected ways, reinforcing the home’s sense of movement and exploration. The result is a residence that feels almost like a vertical playground tucked inside a luxury penthouse.

Despite the whimsical features, the home still offers the types of spaces expected in a high-end Manhattan residence. 

One of four bedrooms. Shannon Dupre of DD-Reps

A second bedroom. Shannon Dupre of DD-Reps

A third bedroom. Shannon Dupre of DD-Reps

An ensuite bathroom. Shannon Dupre of DD-Reps

A glass bridge leading to the corridors. Shannon Dupre of DD-Reps

The expansive rooftop terrace. Shannon Dupre of DD-Reps

The upper portion of the apartment includes expansive living and entertaining areas positioned beneath the copper dome. Large windows and terraces bring in natural light and provide sweeping views across the city skyline.

The home’s dramatic layout also allows for striking vantage points within the interior. Walkways and balconies overlook lower levels, creating a sense of openness rarely found in Manhattan apartments. The vertical design highlights the height of the space and emphasizes the architectural structure of the building itself.

Because of its bold and unconventional design, the penthouse may appeal to buyers looking for something beyond the typical luxury condominium. 

“We’re looking for someone who really looks at the apartment as a work of art,” Gavin said. “I think someone who is a collector would have a real appreciation for it.”