Diego Rivera also spent his life collecting precolonial art, including sculptures, funeral masks, figurines, and vessels. In 1941, the artist began work on Anahuacalli (ah-nah-wah-KAH-lee), a museum to display the 45,000 works he came to own. The design is inspired by Indigenous Mesoamerican temple pyramids and built with volcanic rock. Rivera imagined the space, just a 15-minute drive from the Frida Kahlo Museum, as a city of the arts. It continues to evolve today, with a recent expansion, workshops, and contemporary exhibitions.