An additional of Mexico City's essential historic squares is the Sq. on the 3 Cultures (Plaza de las Tres Culturas). The sq. occupies the website of the main square of the Pre-Columbian city of Tlatelolco as well as scene of the final Determined stand via the Aztecs in 1521 - https://best-places-to-travel-in62604.tinyblogging.com/5-essential-elements-for-mexico-city-points-of-interest-71594881