The Rothko Chapel is a non-denominational chapel in Houston, Texas, founded by John and Dominique de Menil. The interior serves not only as a chapel, but also serves as the display framework for a major work of modern art: on its walls are fourteen paintings by Mark Rothko in varying hues of black. The shape of the building—an octagon inscribed in a Greek cross—and the design of the chapel were largely influenced by the artist. The chapel sits 2 mi (3.2 km) southwest of downtown in the Montrose