Dolores Cárcamo Museum

This guide to the Dolores Cárcamo Museum in Mexico City centers on Diego Rivera's underwater mural, painted in 1950 beneath the giant stone Tlaloc that lies submerged in the shallow pool outside. It traces the building back to the 1940s, when Mexico City's growth was outpacing its aquifer and engineers ran a sixty-kilometer tunnel from the Lerma valley to this valve room, capped by architect Ricardo Rivas in 1951. It follows who Rivera chose to paint on the walls below the waterline, instead of the officials who cut the ribbon. Look for the mosaic skin through the water's constant ripple.