 The Tree House is a remnant of the original Tom Sawyer Island theme, and is arguably now irrelevant in regards to the Island's pirate theme, though it does play into the island's new backstory as being a backdrop for Tom and Huck's wildly imaginative pirate playtime.The Tree House was mostly unchanged during the Pirate's Lair re-theme, except for a couple of small pirate additions themed to appear as though Tom and Huck made them in the tree house.Fort Wilderness is an original 1956 feature of Tom Sawyer Island.