The Templo Mayor was dedicated to the god of water, rain and crops, Tlaloc, as well as the god of war and conquests, Huitzilopochtli. It was a double pyramid - twice as wide as it was deep - to accommodate both dieties. ;) The Templo Mayor was the largest and probably most important building in the pre-Spanish city.

Construction began on it in 1390 and it was re-built 7 times and enlarged 11 times.

There are little snake heads throughout the ruins that look like they are part of a water system of sort.

We really liked the cacti living in among the ruins.

The building in the background fascinates me - it's the church of Santa Teresa la Antigua.

The Cathedral from below.

Again, the cathedral from within the ruins.

The large snake statues have very large grins.

These guys were just hanging out between the layers of the pyramid.

This is the altar area at the top.

The Cathedral. The haze is caused by the incredible volume of pollutants in the air.

Here you get a good idea of the layers upon layers of the temple as it was enlarged.

This is just another building that flanks the ruins. I thought it was neat.

Nothing like a morbid stack of skulls....they're actually quite cute.

Look! Santa Teresa la Antigua again! What a surprise!

There was a little garden in among the ruins near the museum as well.