We are the
original manufacturer
of spherical treehouses

What We Do

We build spherical treehouses as works of art – functional, tasteful, simple, and elegant. We invite people to come and spend a night or more in our unique and magical forest hotel. Free Spirit Spheres is the first and only manufacturer of spherical treehouses in the world.

Jamie "supervises" as Tom snaps a photo while conducting a rigging inspection.

Design, Construction and Rigging


Much of how we design and build at Free Spirit Spheres is informed by the principle and practice or Biomimicry. According to the Biomimicry Institute (biomimicry.org): “Biomimicry is an approach to innovation that seeks sustainable solutions to human challenges by emulating nature’s time-tested patterns and strategies. The goal is to create products, processes, and policies – new ways of living – that are well-adapted to life on earth over the long haul.”

Externally the spherical nut shape is certainly well adapted to life in the forest. A sphere distributes any impact stress throughout the skin and resists puncture or cracking. Like a ping pong ball or a nut, it’s light with a tough skin. The suspension ropes which stretch also absorb some of the force. The suspension concept also reflects biomimicry. The network or web of ropes used to tether the sphere vertically and laterally function much like a spider web – a very strong and resilient distributed structure indeed.

A suspended sphere is tethered by 3 nearly vertical ropes to strong points on each of 3 separate trees. This distributes the load evenly over the 3 trees and results in a stable hang. Like an inverted three-legged stool, there will be almost equal tension in each of the three suspension ropes. The sphere resides in the center of the triangle formed by the 3 trees. It can be slung from 5 to 100′ off the ground, depending on the size of the trees. A tree house sphere uses the forest for its foundation. The occupants have a vested interest in the health of the grove. The supporting web also mirrors our connectedness to our eco-system.

What's New

Flora is in the works

We currently have a new fiberglass bedroom sphere under development in our shop. Just like Luna, Flora will feature innovative interior design, with a bed that drops down from the ceiling to avail a double-size loft bed resting close to the equator. Check the photos below to see where Flora is at. Flora is almost finished now! Stay tuned for further progress reports and images.