The “Treehouse Masters” team constructs a tree fort for a deserving family; Pete and the group recall their biggest challenges and most impressive builds.

Pete uses handhewn rustic cedar to build an African-inspired circular hut treehouse complete with aerial walkway, spiral staircase, and thatched roof.

Pete revisits his former home - a site where he built his very first treehouses. Revamping old treehouse building techniques with new and improved methods, the team fuses traditional wood with the power of steel, making these Nelson classics brand new.

A couple in Tulsa has two things in common: they are both expert gardeners and they both have Scottish heritage. They enlist Pete to build “something extraordinary” in their backyard by creating a treetop Scottish cottage 10-feet high in a robust pin oak. Pete creates this sturdy treetop gardeners’ paradise to resist the powerful Oklahoma winds and connects it directly to the couple’s home via a sky bridge: a first for Pete! The treehouse features custom hanging flower baskets, floral-themed decorative railings, interior cubbies for storing gardening tools, Scottish-themed furniture and even tartan curtains. When all is said and done, the treehouse will be a floating garden in the sky, built by Pete and the NTS crew while donning a new addition to their uniforms – authentic Scottish kilts.

The matriarch of a multi-generational Memphis family with a retreat in a wild bird paradise reaches out to Pete to build a giant bird nest treehouse. This “human nest” will pay homage to the magnificent egret nests that line the family’s lake, and will be housed in two hackberry trees and one sturdy oak. The two-story retreat will feature driftwood railings woven to truly look like a living nest, a Southern-style living area, and twelve hand-crafted windows. The exterior will feature a wraparound screen-porch, wildlife viewing deck, and a dumbwaiter rigged to send Southern sweet tea to the roof during sunset bird watching sessions.

Pete and the crew look to Buddha's teachings as they build a traditional Japanese teahouse 20 feet in the air complete with a shoji screen wall, Tatami mats, low table with sunken floor and pagoda style roof for a zen-like paradise in Seattle.

Truly a worldwide phenomenon, treehouses extend to even the farthest corners of our world. Pete travels to Japan to tour with the country's most beloved, renowned treehouse builder: Takashi Kobayashi. Longtime friend of Pete’s and truly an inspiration to treehouse builders everywhere, Taka takes his American buddy on a whirlwind tour of his greatest creations, including a treehouse bar in the middle of Tokyo, a luxurious spa retreat in the countryside and a touching treetop tribute to children affected by the devastating 2011 tsunami. All the while, Pete experiences the wonders of Japan's wilds, the quirky excitement of Tokyo, and shares with us traditional Japanese experiences.

Pete builds a treehouse that represents the meaning of summer camp, with a glamorous twist, just off the coast of WA. Pete gains inspiration to create a space that includes archery, a rock climbing wall, and enough bunk beds to sleep plenty of “glampers.”

Pete and Daryl join forces with an inventive treehouse designer to create a sky-high geometric globe for an adventurous and deserving family whose many good works include rescuing lost and stranded hikers in the vast woodlands near their Seattle home. This 30-sided, out-of-this-world treetop orb will be connected to the trees solely by wires.

Brian Kelley – a Southern gentleman who just happens to be half of superstar country-pop sensation Florida Georgia Line – is dreaming of a treehouse that he can “cruise” to with his gorgeous new wife in their home outside of Nashville. It is a three story whimsical, speakeasy-themed creative space built at the edge of a ravine below their home, perched in two strong oaks and a hickory tree. A sky-high bridge attached to their front porch floats through the tree branches to the second story of the treehouse, allowing the couple to easily access their private refuge. Pete incorporates wood from a treehouse that Brian’s father built for him as a boy, a bedroom, office, writing room, and a fantastic music-recording studio decorated with Guatemalan fabrics and vintage light bulbs.

An Arizona boy's Make-a-Wish request is granted when Pete designs a tree house with a ramp for his wheelchair and characters from the 2014 film "The Boxtrolls."

Pete revisits his former home – a site where he built his very first treehouses. Revamping old treehouse building techniques with new and improved methods, the team fuses traditional wood with the power of steel, making these Nelson classics brand new.

Pete and the crew look to Buddha's teachings as they build a traditional Japanese teahouse 20 feet in the air complete with a shoji screen wall, Tatami mats, low table with sunken floor and pagoda style roof for a zen-like paradise in Seattle.

Truly a worldwide phenomenon, treehouses extend to even the farthest corners of our world. Pete travels to Japan to tour with the country’s most beloved, renowned treehouse builder: Takashi Kobayashi. Longtime friend of Pete’s and truly an inspiration to treehouse builders everywhere, Taka takes his American buddy on a whirlwind tour of his greatest creations, including a treehouse bar in the middle of Tokyo, a luxurious spa retreat in the countryside and a touching treetop tribute to children affected by the devastating 2011 tsunami. All the while, Pete experiences the wonders of Japan’s wilds, the quirky excitement of Tokyo, and shares with us traditional Japanese experiences.

A farm in Wisconsin is the setting for a two-story tree house that features two decks; a loft; a lounge; and an art studio that has storage space for paint and canvases, a slop sink for washing brushes, an easel, drafting tables and a sewing station.

Pete builds a treehouse that represents the meaning of summer camp, with a glamorous twist, just off the coast of WA. Pete gains inspiration to create a space that includes archery, a rock climbing wall, and enough bunk beds to sleep plenty of “glampers.”

Pete and Daryl join forces with an inventive treehouse designer to create a sky-high geometric globe for an adventurous and deserving family whose many good works include rescuing lost and stranded hikers in the vast woodlands near their Seattle home. This 30-sided, out-of-this-world treetop orb will be connected to the trees solely by wires.

Brian Kelley – a Southern gentleman who just happens to be half of superstar country-pop sensation Florida Georgia Line – is dreaming of a treehouse that he can “cruise” to with his gorgeous new wife in their home outside of Nashville. It is a three story whimsical, speakeasy-themed creative space built at the edge of a ravine below their home, perched in two strong oaks and a hickory tree. A sky-high bridge attached to their front porch floats through the tree branches to the second story of the treehouse, allowing the couple to easily access their private refuge. Pete incorporates wood from a treehouse that Brian’s father built for him as a boy, a bedroom, office, writing room, and a fantastic music-recording studio decorated with Guatemalan fabrics and vintage light bulbs.

An Arizona boy's Make-a-Wish request is granted when Pete designs a tree house with a ramp for his wheelchair and characters from the 2014 film "The Boxtrolls."

Join Pete on an adventure in Germany with two renowned treehouse builders - Christopher Richter, a former student, and Andreas Wenning, one of the world's most celebrated treehouse architects - as they tour Deutschland and every treehouse they can find!

A fun and zany behind the scenes look at the show with some of Pete's favorite, never-before-seen moments.

Pete gathers up the posse to build a Wild West-themed treehouse in North Bend, Washington; they build a horseshoe-shaped construct with a bedroom, county jail loft, and genuine copper ceiling set 15-feet high in a solitary Douglas Fir.

Meeting up with South American treehouse impresario Ricardo Brunelli in the heart of Brazil; treehouse travels from the city of Sao Paulo to the farmlands of Parana.

A summer camp for kids with cancer on Long Island gets a clubhouse with a crow's nest and a peekaboo roof that encourages interaction with nature.

Pete and the crew join a group of young carpenters from Sawhorse Revolution, an organization that introduces carpentry to students with community service projects, to build a treehouse escape.