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The Pinecone Treehouse: A Spectacular Tiny Home In The Trees

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Perched between ancient redwoods, this pinecone-shaped cabin looks like it fell out of a fantasy novel.

Deep in the redwood canopy of Bonny Doon, just outside Santa Cruz, California, a geodesic structure hangs suspended between a ring of towering trees, its faceted glass panels catching light like scales on an actual pinecone. Built by Dustin Feider of O2 Treehouse, the design pulls directly from Buckminster Fuller’s geometric principles, turning a childhood fantasy into a fully engineered, off-grid retreat. It’s not a treehouse bolted to a trunk — it’s a 5.5-ton steel-and-glass form floating in open air, tethered to nothing but the surrounding redwoods themselves.

• The Pinecone Treehouse weighs roughly 5.5 tons (11,000 pounds) and hangs suspended between a circle of redwoods, about 35 feet up on the uphill side and 50 to 60 feet up on the downhill slope.
• The structure uses a steel frame, California redwood, and more than 60 faceted glass and acrylic panels shaped to mimic pinecone scales.
• Access requires climbing an alternating-tread ship’s ladder and entering through a secured floor trap door, with a safety harness system in place for the climb.

Dustin Feider’s Geometric Blueprint

Feider, founder of the Oakland-based O2 Treehouse, has built a career on structures that reject the standard four-walled cabin in favor of geodesic geometry. For the Pinecone Treehouse, he took Buckminster Fuller’s dome logic and stretched it into something more organic — a tapered, cone-like form that reads as part sculpture, part shelter. The steel skeleton does the structural heavy lifting, while the redwood cladding and more than 60 individually faceted glass and acrylic panels give the exterior its layered, scaled texture.

According to details on the project, the entire build came together as a custom design commission completed in roughly four months — a fast turnaround given the engineering required to suspend an 11,000-pound structure between living trees without harming them.

Suspended Between Redwoods

What separates this from a typical elevated cabin is the suspension system itself. Rather than resting on a single trunk or a set of stilts, the Pinecone Treehouse is cradled by a circle of old-growth redwoods, hovering around 35 feet off the ground on the uphill side and climbing to nearly 50 or 60 feet where the slope drops away downhill. That elevation difference means the view changes dramatically depending on which side of the cabin you’re standing near.

Inside the Canopy

Step through the trap door and the interior opens into cathedral-height ceilings with 360-degree views straight into the redwood canopy. Transparent triangular floor panels let guests look straight down to the forest floor, a detail that turns the cabin into something closer to a glass observation deck than a conventional bedroom. A custom queen-sized bed sits at the center, ringed by diamond-shaped windows that open for cross-ventilation on warm Santa Cruz afternoons.

Bathroom facilities are kept separate from the sleeping pod — an open-air setup with a hot shower, a composting toilet, and a sink, reached either by a dedicated catwalk bridge or from ground level, depending on the layout of the specific stay. It’s a detail that keeps plumbing out of the suspended structure entirely, simplifying both the engineering and the maintenance of a cabin that’s essentially floating.

A steel frame, California redwood, and over 60 faceted glass and acrylic panels turn a 5.5-ton structure into something that reads like a pinecone from the forest floor.

From Custom Build to Bookable Stay

What started as a one-off design commission has since become a bookable glamping retreat, listed as an off-grid stay on rental platforms including Airbnb. That shift — from private architectural showcase to public destination — puts the Pinecone Treehouse in the same conversation as other standout tree dwellings that have found new life as short-term rentals, from the hobbit-hole-style adult treehouses popping up on booking sites to jungle builds like the treehouse overlooking an active volcano that guests have documented staying in overnight.

For O2 Treehouse, the Bonny Doon project stands as proof that a structure this ambitious — suspended, glass-paneled, and engineered around living trees rather than a foundation — can move from concept sketch to a place someone can actually book a night in, ladder climb and harness included.