The Treaty of Guadalupe Hidalgo (the peace treaty that ended the Mexican-America War was signed at the altar of the old basilica on February 2, 1848.

Basilica of Our Lady of Guadalupe

The Basilica of Our Lady of Guadalupe (Spanish: Basílica de Nuestra Señora de Guadalupe) is a Roman Catholic church, minor basilica and National Shrine of Mexico in the north of Mexico City. The shrine was built near the location where Our Lady of Guadalupe appeared to Juan Diego Cuauhtlatoatzin. This site is also known as La Villa de Guadalupe or, in a more popular sense, simply La Villa.

• http://en.wikipedia.org/wiki/Basilica of Our Lady of Guadalupe
• http://en.wikipedia.org/wiki/Treaty_of_Guadalupe_Hidalgo