Treehouses aren't just for kids anymore. With its luxury amenities and forest setting, The Woodman's Treehouse is a whimsical retreat nestled in UK's Dorset woodlands. Resting in the branches of an old oak tree, the two-story getaway features a circular floor plan, centered around a rotating wood-burning stove that can be directed at the bedroom, living area, or kitchen. A large rear deck houses a wood-fire pizza oven, outdoor tree shower, and a stainless steel slide, while a spiral staircase leads to an upper deck with a sauna and hot tub. Taking advantage of the dramatic scenery, picture windows surround the perimeter, an opening in the floor gives views of the stream below, and glazing above the bed frames the oak canopy overhead.