Mexico City 18th November 1978

The Metropolitan Cathedral of the Assumption of the Most Blessed Virgin Mary into Heaven is situated on top the former Aztec sacred precinct near the Templo Mayor on the northern side of the Plaza de la Constitución.

It was built in sections from 1573 to 1813 around the original church that was constructed soon after the Spanish conquest of Tenochtitlan.

It's not your eyes, the building was structurally unstable because much of Mexico City is built upon the dried lakebed of Lake Texcoco. Restoration work beginning in the 1990s stabilized the cathedral and it was removed from the endangered list in 2000