Coyoacán
The entrance of the Casa Azul, Frida Kahlo Museum, Coyoacan. Photo via Wikimedia Commons.
A historic southern borough of Mexico City that still feels like a village, with cobbled streets around the Jardín Centenario and the 16th-century San Juan Bautista parish. It is home to the Casa Azul, Frida Kahlo's cobalt-blue house museum, and to Leon Trotsky's house museum. Weekend crowds come for the markets, street food, and churros.