More than 2 million people visit this site annually, making it the most popular Mayan ruins on the Yucatan Peninsula. Many Mayan ruins are located deep in the jungle, but Tulum is situated next to the sea, making the site especially beautiful. There are about 60 structures including the Temple of the Frescoes and El Castillo (the Castle), two of the most interesting buildings. Guides are available at the entrance to Tulum, but the most important buildings have placards with information in English, Spanish and Mayan. It takes about two hours to tour the ruins, but visitors might want to bring a picnic lunch and swimsuit and make a day of it. Additional fee to use video camera. Children under 13 are free.