Part of an environmentally conscious glamping retreat in Dorset, England, this two-story tree house stands on high stilts to minimize its effect on the land. Inside, there’s a circular living room with a revolving fireplace, as well as a bedroom with a skylight, a bespoke kitchen, and an updated bathroom. The exterior deck includes an open-air shower and a spiral staircase that leads to the top level, where a hot tub and sauna await.