Okay, so it’s not completely invisible, but until somebody invents a cloaking device, it’s probably as close as we’re gonna get. Built by Tham & Videgard, the Mirrorcube is one of what will be six units in the “Treehotel” in Harads, Sweden.
The 4 meter square cube is attached to one tree and ‘is clad entirely in mirrored glass.’ To see more images of the Mirrorcube as well as the other tree houses of the Treehotel, follow this jump to designboom.