Pitched to folks who like to glam it up while camping (aka "glamping"), Free Spirit Spheres' spherical lodgings are strung from three trees each, a concept that the company says "borrows heavily from sailboat construction and rigging practice." There are three units in all, two made from wood and one from fiberglass.
A graphic designer in New Zealand built this "tech tree house," the Skysphere, from scratch for $50,000 in materials and a mere 3,000 hours of work. It's solar-powered and Android-controlled, and has a "refrigerated, in-couch beer dispenser." About the only thing it doesn't have right now is a bathroom.
The Glasshouse Treehouse in New York's Catskill Mountains was constructed, in part, with salvaged windows.
The waterproof, aluminum-framed Cocoon Tree could be yours. Glamping Technology sells kits for 6,700 euros -- about $7,200, £5,750 or AU$9,450.
The unit is more than big enough to accommodate two adults. It holds up to 2.3 tons.
This unique Airbnb rental in northwestern Germany sits about 10 feet above a pasture. Jojo, as the stilted tree house is called, can accommodate up to 12 people. Wi-Fi and an iPad are at your disposal.
It's not always snowy in Rovaniemi, Finland, but when it is, the tree-house suites at the Arctic TreeHouse Hotel are especially picturesque.
Billed as the Bel Air Treehouse, this $1,000-a-night Airbnb rental has Wi-Fi, a chef's kitchen and skylights.
The 936-square-foot, luxury Black Cabin is one of two tree houses at La Piantata, a bed and breakfast on Italian farmland between Siena and Rome. You'll find it in a 200-year-old maritime pine, about 23 feet above the ground.
The pod-shaped Redwoods Treehouse in Auckland, New Zealand, is situated about 33 feet above ground in the huge tree from which it takes its name. It's available for rent, with the capacity to seat 30 guests for corporate events or weddings.
There are a lot of selling points for this Airbnb rental. Our favorite? It features a hot tub up in the trees.
The Majestree, soaring nearly 50 feet above the ground with the help of a stately Douglas fir, is one of more than a dozen treehouses at Out'n'About, a bed-and-breakfast "treesort" in Cave Junction, Oregon, near Siskiyou National Forest. Be prepared to climb four sets of stairs in all, and cross two suspension bridges, to access it.
Located in the woods of Bolt Farm, The Majestic is a 40-acre spread in Walhalla, South Carolina, designed by Seth Bolt of the Grammy-nominated band Needtobreathe. Available as an Airbnb rental, the tree house is off the grid (no Wi-Fi or even cable TV) and that's fine. You're supposed to stare at the windows, not a screen.
In Banos, Ecuador, the star attraction of the for-rent La Casa del Arbol -- literally "the tree house" -- is the "Swing at the End of the World." It lets its brave user hang out over the Tungurahua volcano, some 8,500 feet above sea level.