Cappy's Treehouse is a location in the Safari Adventure park of Nuka-World.
A popular attraction for children, offering a stunning view of Nuka-World, the treehouse was also claimed by a small group of soldiers in the wake of the Great War, who moved weapons and gear to the upper level. Unfortunately for them, either radiation sickness or disagreements resulted in their death, leaving the loot ripe for the picking.
Cappy's treehouse is surrounded by a fairly simple maze. At the end lies an lift that leads to the treehouse proper. The lower floor has little but a spectacular view of the park; the upper floor has a Nuka-Mixer station and a small cafe.
Cappy's Treehouse appears only in the Fallout 4 add-on Nuka-World.