Xochimilco

In southern Mexico City, a gritty working-class neighborhood gives way to the famous canals of Xochimilco, the last remnants of a vast water transport system built by the Aztecs. Colorful gondola-like boats take visitors on cruises while food vendors, artisans and mariachi bands float past. The atmosphere is festive, especially on weekends. Tourists can also visit the eerie, purportedly haunted Island of the Dolls.