The city's historic core including the Forum, Colosseum, Pantheon and Vatican extraterritorial properties. Inscribed 1980.
From Wikipedia
The historic center of Mexico City, also known as the Centro or Centro Histórico, is the central neighborhood in Mexico City, Mexico, focused on the Zócalo and extending in all directions for a number of blocks, with its farthest extent being west to the Alameda Central. The Zocalo is the largest plaza in Latin America. It can hold up to nearly 100,000 people.