Lake islands of Mexico

', also known as Mexico-Tenochtitlan', was a large Mexican in what is now the historic center of Mexico City. The exact date of the founding of the city is unclear, but the date 13 March 1325 was chosen in 1925 to celebrate the 600th anniversary of the city. The city was built on an island in what was then Lake Texcoco in the Valley of Mexico. The city was the capital of the expanding Aztec Empire in the 15th century until it was captured by the Tlaxcaltec and the Spanish in 1521.

Isla de Janitzio () is the largest of five islands in Lake Pátzcuaro in the state of Michoacán, Mexico.

thumb|right|upright=0.9|Map of the Valley of Mexico at the time of the Spanish conquest showing the location of lake Xaltocan.