This church is built atop the world's largest pyramid. only it's all overgrown and looks like a hill. it was built out of adobe bricks so it's pretty easy for trees and plants to convert the pyramid back into a "hill". When the Spaniards arrived, they built this church on top. I forget whether they knew it was a pyramid or not. The views of Popocatépetl and Iztaccíhuatl are stupendous. DSCN2685