Which New7Wonders site is a Maya city on the Yucatán Peninsula?

The New7Wonders site that was a Maya city on the Yucatán Peninsula is Chichen Itza.

Chichen Itza is a major pre-Columbian archaeological site in Yucatán, Mexico. It was built and expanded by Maya communities and became an important regional center during the Late Classic, Terminal Classic, and early Postclassic periods. Its site core covers at least 5 square kilometers and includes monumental plazas, temples, ball courts, and paved causeways.

Its best-known structure is the Temple of Kukulcán, also called El Castillo. The pyramid is associated with the feathered-serpent deity Kukulcán and is famous for architectural and astronomical features, including the shadow effect that appears on the staircase around the equinoxes. The site also contains the Great Ball Court and the Sacred Cenote.

Chichen Itza was named a UNESCO World Heritage Site in 1988. In 2007, the Temple of Kukulcán was selected as one of the New Seven Wonders of the World through a worldwide popular vote. The designation is modern; it should not be confused with the separate ancient Greek list of the Seven Wonders.