The layout of the streets around the centre of Mexico City today is mostly exactly the same as when it was the capital of the Aztec empire. Thanks to this and good record keeping by the Spanish I was able to stand at the corner of Republica de El Salvador and 20 de Noviembre today which was the exact spot where Cortez and his entourage were standing when Moctezuma II came down from the palace to meet him, on November 8, 1519.
This would have the Spanish view, the Cathedral in the distance would instead have been the largest Aztec pyramid. As soon as the Spanish took control they enslaved the Aztec religious class and forced them to raze the pyramid and build the Cathedral with the stones.
A Bit Gone 