As one of the largest cities in the world, there's lots to see in Mexico City, but if you go, make sure you don't miss this ...

Archaeologists have discovered the ruins of an 800-year-old Aztec pyramid in the heart of Mexico City that could show the ancient city is at least a century older than previously thought.

While it is largely unknown who built the pyramid in this city in south-central Mexico (and why), historians believe it was erected around A.D. 100 prior to the existence of the Aztecs in the area.

The cathedral was built between 1573 and 1813 after the Spanish conquest of Tenochtitlan and is considered one of Mexico ... destroyed pyramids and structures belonging to the Aztecs.

On the edge of Mexico City's famed Zócalo plaza, next to the ruins of the Aztec sacred pyramid known as the Templo Mayor, the remains of an animal—perhaps a dog or a wolf—were discovered.

Built in the 16th century by the Spanish on the ruins of Tenochtitlan, the old Aztec capital, Mexico City is now one of the world's largest and most densely populated cities. It has five Aztec temples ...

Janet Jarman In the fall of 2003, a heavy rainstorm swept through the ruins of Teotihuacán, the pyramid-studded, pre-Aztec metropolis 30 miles northeast of present-day Mexico City. Dig sites ...

The holy city of Teotihuacan ... some 50 km north-east of Mexico City. Built between the 1st and 7th centuries A.D., it is characterized by the vast size of its monuments - in particular, the Temple ...