Within its fantastic bulk are sheltered some 16 chapels, several alters and retablos, a fine parish church, and a choir, each an inspired work of art replete with gold gilt, fine paintings, and sculptural details. Above it all, 25 bells - measured in tons - ring and sing to the city all around.
The cathedral sits atop a far more ancient foundation, originally built for a temple to Huitzilopochtli, the Aztec God of war. His pyramid was destroyed by the Spanish, who built their cathedral in its stead. As the thirsty city emptied its underground aquifer, however, this massive monument began to sink into the subsoil. It was stabilized in the 1990s, but still lists to one side.
I always like to take an overview tour of new cities we visit. This was one of best because of the amazing sites in Mexico City that I had not seen and not aware of. We had a small van and were able to make several significant stops along way.
Roberto our guide was very good and very entertaining. We all appreciated not having American's on our tour. Perfect to end at the Anthropological Museum.
All roads lead to the Zócalo, but you're much better off without a car - traffic is terrible. Instead, take Metro Line 2 to the Zócalo stop, right in front of the cathedral.