It is at the northeastern tip of the Yucatan Peninsula, just 18 km southeast of the Cabo Catoche lighthouse.

The Spanish arrived here in 1517 and named it "Gran Cairo".

Officially, this is the first national territory the conquistadors set foot on, and where the first Catholic church in Latin America was erected. Gran Cairo was abandoned in the 17th century, and currently, there are only some ruins of pre-Hispanic structures covered in dense vegetation and other ruins of a 16th-century church. The church is supported by a hill of rocks, and at its highest point, three niches can be distinguished, which were said to have housed three virgins made of seashells.

Additionally, there is a small cemetery covered in vegetation.

It is recommended to arrive by boat as the overland path is somewhat difficult due to overgrown vegetation.