A great day trip outside of Mexico City. Do the steep climb to the top of the Sun Pyramid for an amazing view of the surrounding area and to see the impressive scope of this deserted city.
Some of the largest pyramids in the world, the area is well worth exploring. Wander through old temples, examine paintings of jaguars, and avoid aggressive touts.
An easy bus trip from Terminal Autobuses del Norte. They leave every hour and drop you off right at the park.