Carnival in Mexico is celebrated by about 225 communities in various ways with the largest and best known modern celebrations occurring in Mazatlan and the city of Veracruz.
Forty-five miles 70 kilometers southeast of Mexico City - and the old Aztec capital of Tenochtitlan - stand the two great sacred mountains of Popocatepetl and Iztaccihuatl.
sacred sites.com/ americas /mexico/sacred_mountians
The siege of Tenochtitlan the capital of the Aztec Empire came about in 1521. Cortez lost 2/3 of his Army in the retreat