Mexico-Tenochtitlan (kastillaxa0: México-Tenochtitlan, Spanish pronunciation:xa0[ˈmexiko tenotʃˈtitlan]), commonly known as Tenochtitlan (Classical Nahuatl: Mēxihco-Tenōchtitlan [meːˈʃíʔ.ko te.noːt͡ʃ.ˈtí.t͡ɬan]) was a Mexica (city-state) located on an island in Lake Texcoco, in the Valley of Mexico. Founded on June 20, 1325, it became the capital of the expanding Aztec Empire in the 15th century,[1] until it was captured by the Spanish in 1521.