Kanazawa 21st Century Museum of Contemporary Art

This guide to the Kanazawa 21st Century Museum of Contemporary Art follows architects Kazuyo Sejima and Ryue Nishizawa as they set out to build a museum with no front, back or grand entrance, just a flat circular disc set in a park. You'll hear how sheet glass that will not bend on its own was cut into curved panels to fake a seamless ring, and how boxy galleries rise unexpectedly through what looks like one low roofline. Look closely at the glass for the thin seams the trick can't quite hide.