A permanent display of Diego Rivera's huge collection of pre-Hispanic pieces. The impressive building is made entirely of volcanic rock and was designed by Rivera himself. It's in the shape of a pyramid, a tribute to Maya and Aztec cultures. Call first, as the museum is undergoing restorations, which are expected to be completed in 2008. Tuesday-Sunday 10:30 am-5 pm. M$45 adults. Hourly tours. Calle del Museo 150, Coyoacan, Mexico City. Phone 5617-4310.