The Riu Palace Peninsula Cancún officially opened for business Friday in the Mexican resort's Hotel Zone. The US$140 million all-inclusive beachfront property has 562 rooms and 48 villas, and is designed to be a more luxurious, exclusive option than Riu's three existing Cancún resorts. On the hotel grounds are some recently excavated Mayan ruins -- known as Ta'acul, or "that which remains hidden." Riu contributed funding for the excavation and is responsible for the care and maintenance of the site. Also on-site are six restaurants, seven bars, five swimming pools and a Renova Spa. As of this winter, free Wi-Fi will be available in the rooms and lobby. During the day, guests have access to the facilities of the neighboring Hotel Riu Caribe, which offers three conference rooms and a scuba-diving pool.