Its rooms present a collection of more than 16,000 pieces, including masks, drawings, pots, terracotta, Prehispanic objects, puppets, votive offerings, pictures, crafts, musical instruments and colonial furniture. His collection of masks is considered the largest in the world. It also has a collection of works by Diego Rivera, among which is the study of child self-portrait of Diego's mural Dream of a Sunday Afternoon in Alameda Park. This work is on permanent display at the Museo Mural Diego Rivera in Mexico City.