Teshima Art Museum is a concrete shell in the shape of a waterdrop. Two oval openings allow wind, sound, and light to enter the space – a collaborative effort between architect Ryue Nishizawa and artist Rei Naito (her installation “Matrix” is the only work on view). “It was a structural challenge,” explains Nishizawa. “A space that equals nine tennis courts, has no supporting columns, and is only 4.5 meters high would normally collapse. The minimum is 10 to 15 meters, but then you lose the visual impact!” Nishizawa’s solution was to have the static program rewritten for stability.