Go behind the design of the Mt. McKinley Princess Wilderness Lodge treehouse with interior designer, Christina!

Go behind the build of the Mt. McKinley Princess Wilderness Lodge treehouse with Pete!

Fast-forward the Treehouse Masters' build in Alaska for Mt.McKinley Princess Wilderness Lodge.

Go behind the build of singer Grace VanderWaal's "dream treehouse" with Pete!

Fast-forward the Treehouse Masters' sophisticated, sleek-and-chic treehouse in the heart of Dallas.

Go behind the design of the "Birdhouse" treehouse in Wisconsin with Christina.

Watch the "Birdhouse" treehouse in Wisconsin come to life in high-speed!

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Go behind-the-build of the Jeffersonian Honeymoon Suite in Virginia with Pete Nelson!

Fast-forward the Treehouse Masters' Jeffersonian Honeymoon Suite build in Virginia.

Go behind-the-build of the "Thrill 'n' Chill" Treehouse with Pete!

Fast-forward the Treehouse Masters' double-decker hideout in Texas Hill Country.

Go behind the build of the campers' glamping retreat in New Jersey with Pete Nelson!

Go behind the build of the team's first international treehouse in Norway!

Vanessa wanted to take her 16 year old treehouse from slumber parties to cocktail parties

Before she left for college, Naomi wanted to give her nieces and nephews a place to have adventures and experience nature like she as a child

Take a tour of the authentic, western-themed treehouse Pete and his team created for their electrician, the Outlaw Hideout.

Pete and the Nelson Treehouse team drop the tools for a little paintball fun with their clients.

Plans are set for the Man-Cave Treehouse! And, boy, is Pete excited.

Tory makes sure to include the artist's work in this beautiful fix of an old treehouse.

Go behind the build of the team's first international treehouse in Norway!

Campgoers will have the experience of a lifetime at Sunrise Day Camp - complete with a wheelchair accessible treehouse.

Take a behind-the-scenes tour of the manliest Man-Cave treehouse Pete has ever seen.

Climb the stairs, grab a cold cider and check out the tasting room Pete and the team created for Angry Orchard in Walden, NY.

The big reveal of the Texas-sized Man Cave Treehouse - Pete's most expensive build yet gets a huge response.

Pete, dressed in a kilt, takes us on a private tour of the Scottish Treehouse cottage.

Finding the right spot with the right trees is crucial to building your own perfect treehouse.

The Sweetgum Thicket is a house literally formed by the branches of trees.

See how the French-inspired restaurant dining room went from a few branches to the perfect spot for a romantic meal.

Watch an exclusive time lapse of John and Lolly's treehouses!

Now that the treehouse is finally completed, Pete adds a special plaque to thank Quicken Loans for making this treehouse a reality.

Now that the camo treehouse is built, it's up to Tory to add the finishing touches with her interior designs!