Getting lost in the forest for some behind-the-scenes fun with tree house master Pete Nelson as he uncovers never-before-seen footage, bloopers and loads of extra tree house tours, including a new peek inside Dale Earnhardt Jr.'s arboreal escape.

Episode Synopsis: A couple in Oregon need extra room when their daughter comes home from college, so Pete builds a guesthouse in a tree.

A young couple has big dreams of a lighthouse treehouse atop a seaside seawall along the coast of Northwest Washington. Pete is challenged by the property’s incredibly steep grade and must deliver all of his materials to the site by way of barge only! The octagon-shaped, two-story, white-and-red shingled structure, which is housed among a group of cottonwood trees, features porthole windows, a wrap-around balcony, a nautical-themed interior and rainbow-colored glass. The couple, wanting to truly live off the grid, throws Pete a curve ball by asking him for a rainwater shower system, a composting toilet and supply power (where there is none). Surprisingly, Pete delivers a custom gift for the couple's pampered pooch: a 'backyard' high in the air!

A large family from Independence, Ohio, runs a nonprofit organization Cornerstone of Hope, which provides grief services to anyone who has lost a family member. The family asks Pete to build a therapeutic space in the trees for Cornerstone of Hope, incorporating the nonprofit’s symbol, the butterfly. Pete jumps at this opportunity as he strongly believes in the unique healing power of trees and treehouses. He designs a butterfly-themed treehouse that stretches across six tree varieties, including a gorgeous cluster of maple, cherry, tulip and beech trees. The treehouse features a 400-square-foot deck, loft space, a butterfly wing-shaped jungle gym, a gigantic climbing net and a breathtaking butterfly chandelier. Pete really goes above and beyond when he outfits the treehouse with mechanical butterflies that can be enjoyed all year round!

Busy film industry clients in Fayetteville, Ga. request a treehouse on their exuberant 63-acre plot of land, inspired by mid-century architecture and equipped with a zip line.

Two sisters who run their family’s rural inn in Farmington, Pennsylvania, present Pete with a bear of a task: build an observation treehouse on their 1000-acre property, where they can watch the black bears roaming the land. Pete is a little nervous at first when it comes to his team building in the midst of these wild beasts, but he turns his fear into inspiration by creating his first-ever mid-century decagon treehouse with walls of glass and windows, a wrap-around deck, cathedral ceilings and a closed-circuit bear-cam tracking system nestled among three white oaks and standing more than 20 feet from the ground. For the interior, Pete incorporates mission-style furniture, a roaring fireplace and a handmade oak bar.

A family in Bedford, N.Y., spare no expense for a tree house that features a patio for barbecuing, a living room and a playroom with chalkboards.

Pete finds inspiration in old tales to build a mesmerizing treehouse, with a curved turret that soars two stories high and a deck to take in the amazing sights, over the stems of a twisty silver maple on the shore of Lake Chelan.

Just one day of Christmas cheer isn’t enough for a real-life Santa and Mrs. Claus, who celebrate the season 365 days a year in Southern California. Old St. Nick and the missus call on Pete and his crew to spruce up their yard with some holiday magic. Pete creates a treehouse workshop complete with Santa's red chair, a naughty-or-nice drawbridge, a secret elf trap door, a candy cane and holly access bridge and some miracle Christmas snow...in the California desert!

Inspired by South American treehouse maestro Richard Brunnelli, Pete builds a hexagonal live-in treehouse for a Treehouse Workshop graduate in coastal Oregon.

A barn-theme tavern—complete with a brewing system—that's accessible by a rope bridge 25 feet high is constructed for a family in rural Ohio, and Pete gets help with the project from some Amish neighbors.

Pete builds an incredible, adventure-themed treehouse for a young, exploration-loving family in the heart of Pennsylvania’s Pocono Mountains. The family calls Pete and his crew to create a massive, two-story jungle masterpiece packed with secret doors and hidden passageways within a cluster of cherry trees! Pete delivers not just one but two bouncy suspension bridges, a daring rock-climbing wall anda living wall containing more than 700 live plants for this colossal treehouse, which overlooks a deep gorge. With a secret sarcophagus entrance, a second-sleeping loft and loads of adventurous novelties, this treehouse is sure to bring the family hours of fun, especially when Pete reveals his tailored, sentimental surprise: a tribute to the family’s beloved grandmother.

A Celtic-theme cottage in an olive tree in California features a circular design that includes a fireplace and a rain-maker to mimic damp Irish weather.

In the Season 1 finale, Pete builds a honeymoon suite for a couple who want to get married at Treehouse Point, but all of the other accommodations are booked.

A nature-loving woman in Humboldt County, California, asks Pete and his crew to build a treehouse that pushes their skills to the limit. She feels cramped in her home and wants a permanent residence 60 feet up in the area’s giant redwood trees. Pete and crew take the comforts of home to new heights in this bohemian-chic, tri-level treehouse, which boasts a bathroom, lounge and bedroom loft spread out throughout three floors with low-hanging lights, tapestries, modular furniture and an overall genie-in-a-bottle aesthetic. The owner dreams of being able to see the Pacific Ocean from her cozy forest perch atop the redwood canopy, and Pete knows that he and his crew are the only ones who can deliver!

A family from nearby Seattle wants to expand its already famous rural recording studio up into the trees! Up for the challenge, Pete creates a high-tech, two-story recording oasis more than 36 feet tall with in a group of cedar trees. Marrying music and nature, Pete and crew accent the treehouse with rust-colored metal, patterned, textured cork walls and a massive picture window that overlooks the wild salmon creek below. Upon completion, this musical treetop masterpiece is ready for its first recording session when a Grammy-award-winning megastar arrives at the reveal to lay down a brand-new track.

Pete goes to Nebraska to build a tree house for a fun-loving family who enjoy music, writing and the occasional happy hour.

Pete and his team embark on a quest to an idyllic farm in Waxhaw, NC with orders to craft an elegant English retreat with a hanging bed fit for a queen. But one thing might stand in the way of Pete and his holy grail of pastoral treehouse builds...goats!

Tree-house designer Pete Nelson builds arboreal getaways that are large and ornate or small and simple in this series, which begins with a ranch-style structure in several hackberry trees on a property near Waco, Texas.

A spa retreat on a ranch in Texas presents Pete with several plumbing challenges when he makes room for a steam shower and a Japanese soaking tub.

Pete returns to two of his first builds to reconstruct, revamp, and revitalize a pair of treehouses in need of major makeovers. These fixes prove to be more than just a remodel job when Pete and his team give both treehouses a brand new life in the trees.

Pete Nelson uproots an existing treehouse from the family-owned bed & breakfast Treehouse Point to build a custom-made treehouse as a housewarming gift for his daughter, Emily.

In search of an inspiring space to begin her first novel, a writer in Rhinebeck, New York calls on Pete to build a hideaway to embrace her creativity but instantly feels blocked when she disagrees with Pete about the chosen tree. Once Pete wins her over, he transforms the tree into a gold-leafed “Spirit House” retreat filled with Buddhist artifacts and uplifting oddities and a loft to rest the brain between chapters.

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.