Mexico City is the capital city of Mexico. It is the most important economic, industrial and cultural center in the country, and the most populous city with 8,720,916 inhabitants in 2005

Mexico City is located in the Valley of Mexico also called the Valley of Anáhuac, a large valley in the high plateaus at the center of Mexico, at an altitude of 2,240 meters (7,349 feet). It was originally built by the Aztecs in 1325 on an island of Lake Texcoco. The city was almost completely destroyed in the siege of 1521, and was redesigned and rebuilt in the following years following the Spanish urban standards

The average annual temperature varies from 12 to 16º C (53 to 60º F) depending on the altitude of the borough. Lowest temperatures, usually registered during January and February may reach -2 to -5º C (28 to 23º F), usually accompanied by snow showers on the southern regions of Ajusco, and the maximum temperatures of late spring and summer may reach up to 32º C (90º F).