What looks like an abstracted cottage from a distance, with whitewashed walls and a strangely curved roof, is actually a magnificent 1950s chapel on the Bourlémont hilltop in Ronchamp, France, designed by the modernist architect. The bent roof that creates a natural fountain when it rains, as well as the overall sculptural form, make it a celebrated outlier in Corbu’s career. A wall with small slits and squares cut for light produces a glittering, spiritual calm from inside.