Hiring a guide at the entrance or booking a Chichen Itza tour in advance can transform ... the Temple of the Warriors, and the observatory known as El Caracol. There are also less-visited cenotes ...

at Chichen Itza. It is called the Castle of Kukulcan and stands 50-feet-tall (15 m). There is also a large round structure, The Observatory, which you won’t find at other Yucatan Mayan ruins sites.