The main attraction of this archaeological site is the central pyramid, El Castillo. Built by the Maya between the 1000 and 1200 A.D., it is one of the most astonishing monuments in the Western Hemisphere. Check out nearby cave of Balankanche, which was discovered by a tour guide in the late 1950s. Among the huge glittering stalagmites you’ll see artifacts that remained untouched for centuries.
Must-get shots: Visit on either the spring or autumnal equinox to photograph as the setting sun creates a shadow of a snake that slithers down the steps of the temple of El Castillo over the course of 34 minutes.