179km (111 miles) W of Cancún; 120km (74 miles) E of Mérida
The fabled ruins of Chichén Itzá (no, it doesn't rhyme with "chicken pizza"; the accents are on the last syllables: chee-chen eet-zah) are the Yucatán's best-known ancient monuments. They are plenty hyped, but Chichén merits a visit. Walking among these stone platforms, pyramids, and ball courts gives you an appreciation for this ancient civilization that books cannot convey. The city is built on a scale that evokes a sense of wonder: To fill the plazas during one of the mass rituals that occurred here a millennium ago would have required an enormous number of celebrants. Even today, with the mass flow of tourists through these plazas, the ruins feel empty.
When visiting the ruins, keep in mind that much of what is said about the Maya (especially by tour guides, who speak in tones of utter certainty) is merely educated guessing. This much we do know: The area was settled by farmers as far back as the 4th century A.D. The first signs of an urban society appear in the 7th century in the construction of stone temples and palaces in the traditional Puuc Maya style. These buildings can be found in the "Old Chichén" section of the city. Construction continued for a couple hundred years. In the 10th century (the post-Classic era), the city came under the rule of the Itzáes, who arrived from central Mexico by way of the Gulf Coast. They may have been a mix of highland Toltec Indians (the people who built the city of Tula in central Mexico) and lowland Putún Maya, who were a commercial people thriving on trade between the different regions of the area. In the following centuries, the city saw its greatest growth. Most of the grand architecture was built during this age in a style that is clearly Toltec-influenced. The new rulers may have been refugees from Tula. There is a mythological story told in pre-Columbian central Mexico about a fight that occurred between the gods Quetzalcoatl and Tezcatlipoca, which resulted in Quetzalcoatl being forced to leave his homeland and venture east. This may be a shorthand account of a civil war in Tula, different religious factions, with the losers fleeing to the Yucatán, where they were welcomed by the local Maya. Over time, the Itzaés adopted more and more the ways of the Maya. Sometime at the end of the 12th century, the city was captured by its rival, the city of Mayapán.
Though it's possible to make a day trip from Cancún or Mérida, it's preferable to overnight here or in nearby Valladolid. It makes for a more relaxing trip. You can see the light show in the evening and return to see the ruins early the next morning when it is cool and before the tour buses arrive.