Kinich Kak Moo (also known as Kinich-Kakmó, Calle 27 between Calles 28 and 30, 8 a.m.–5 p.m. daily, free) is one of numerous Maya ruins right in Izamal proper.

While the others are relatively modest, Kinich Kak Moo is a whopping 195 meters (640 feet) long, 173 meters (568 feet) wide, and 34 meters (111.5 feet) high, making it the largest pyramid in the state of Yucatán, and the third- to fifth-largest in Mexico, depending on how you define “large.”

Built around A.D. 400–600, the pyramid was dedicated to the sun god, or Fire Macaw, and was the principal structure of a massive plaza that extended over much of present-day Izamal. Interestingly, it was once a deeply important site for Maya shamans and worshipers, just as Izamal’s Convento de San Antonio de Padua has become for Mexican Catholics today.

Kinich Kak Moo is not as fully restored as pyramids like El Castillo in Chichén Itzá, but it is still worth a climb, especially for the views of the city and surroundings. On a clear day, you can see Chichén Itzá, 50 kilometers (31 miles) to the east.

Other smaller pyramids can also be visited (or at least seen), including Itzamatul (Calle 26 at Calle 31, 8 a.m.–5 p.m., free) which affords a fine view of the city and Kinich Kak Moo. Others are El Conejo (Calle 24 between Calles 31 and 33) and Kabul, which is on private property; access is restricted. You can catch a glimpse of it down a maintenance road on Calle 32 between Calles 29 and 31.