This tower was constructed by Team Anemoi, a group of architects sponsored by design firm Ennead. Made of 100-percent reclaimed carpet tile, this shelter is a kitty high-rise complete with a climbing canyon, napping pods, windows and rooftop perches. In addition to the sustainable construction material, this design didn’t leave any parts to waste — the carpet tile that was cut to form the interior pods creates the field of scratching pods around the tower.