Create a Mexico City itinerary fast with this list. On your first visit to Mexico City, you may be overwhelmed with the sheer amount of things to do on vacation. Sitting at 7,349′ (2,240 m) elevation, Mexico City is surrounded by twenty-three volcanoes and was built on top of a lake when the Aztecs settled the area, then known as Tenochtitlán. After conquest, the Spanish drained the lake in a failed attempt to find fertile soil and built Mexico City on top of the Aztec ruins. You can still see remnants of this around…