The pyramid of Acatitlan is an impressive Mesoamerican archaeological site in the modern town of Santa Cecilia on the outskirts of Mexico City. Though a huge and impressive structure, the site itself is a little misleading, having been significantly reconstructed in the 1960s.
Probably inhabited since the 12th century, the site was later part of the area dominated by the Aztecs before the arrival of the conquistadors. After the conquest of the Aztec Empire, Acatitlan was largely abandoned and the pryamid itself fell into decline as it was plundered for masonry.
Today the pyramid of Acatitlan is located in a small park in the heart of the modern town and is quite a surprising location to stumble upon. There is a small museum on site with further information about the history of the settlement.