Despite the towering reputation of Egypt's Great Pyramids at Giza, the Americas actually contain more pyramid structures than the rest of the planet combined. Mesoamerican peoples built pyramids from around 1000 B.C. up until the time of the Spanish conquest in the early 16th century. The most famous single pyramid in Latin America is the Pyramid of the Sun at Teotihuacán, Mexico. In this civilization and structure, the Aztec empire spirituals sacrifice human heart and blood. Although bloody and gory, the pyramids of the Aztec hold special wonder in people's minds.