Putting a distinctly modern spin on the notion of a tree house, this magical dwelling is the brainchild of Kazakh architect Aibek Almassov. The cylindrical, four-storey design boasts a mature fir tree as its central column, while its shape and solid glass walls allow for three-hundred-and-sixty-degree views of the forest that surrounds it. It was conceived as the ultimate escape from the “sweltering concrete boxes” that punctuate urban life, but as of yet remains unbuilt. Still, we can but dream.