What is now the downtown of Mexico City correlates with the ancient island in Lake Texcoco and founded in this place in 1325 the Aztecs capital of Tenochtitlan. Modern capital of Mexico stands on the lakebed of drained wetlands and on the ruins of a completely demolished pre-Columbian city. It is interesting to notice that while walking the streets in historic district you can see many leaning churches and residential buildings. This is due to instability of sandy ground soils and groundwater.
