The island of Cozumel is Mexico's largest island, and is located 12 miles (19km) off the Caribbean coast of the Yucatan Peninsula, opposite the resort Playa del Carmen. It has exceptional coral gardens and spectacular reef drop-offs offering legendary snorkelling and the best diving in Mexico, ranking as one of the top five dive destinations in the world. The west coast of the island is where the majority of development has taken place and is where the town of San Miguel is situated. Due to the island's popularity with wealthy day visitors from the passing cruise ships, the town is packed with pricey shops, restaurants and bars, as well as the dozens of dive shops. Cozumel is a favourite destination for divers and non-divers alike, offering some good beaches, crystal clear water and plenty of sunshine. Its ease of access to the mainland also makes day excursions to some of the popular Mayan sites, like Chichén Itzá, possible.