Located 28 km south of Mexico City, Xochimilco is a former independent city established during the pre-Hispanic period. These early settlements at the Valley of Mexico were connected by an extensive lake and canal system. The settlers built artificial islands called “chinampas” or floating garden where flowers, fruits and vegetables were being raised. The canals were constructed as a navigation route for the “chinampas” which help feed the Aztec empire. The importance of Xochimilco to the Aztecs has made it worthy of its designation as a World Heritage Site in 1987.