A visage of the Aztec rain god Tlaloc is depicted on a centuries-old brazier at the Templo Mayor museum in the Centro Histórico area of Mexico City. Tlaloc was a major deity in the Aztec religion, and Templo Mayor was built partly in the god’s honor. Click the above image to enlarge, click to view my high-resolution photo gallery, or click to read my travel guide “A Weekend Guide to Mexico City’s Centro Histórico.”