4. CHICHEN ITZA (MÉXICO)

 The Temple of Kukulcán is a Mesoamerican stepped pyramid that dominates the center of the archaeological site of Chichén Itzá in the Mexican state of Yucatán. The building is more formally designated by archaeologists as Chichén Itzá Structure 5B18.

The pyramid has 91 steps on each of its sides. Adding all of them plus the final step is 365 steps, as many as there are days in a year.