Travelers to Belize will find a diverse landscape on its mainland and about 450 islands in the Caribbean Sea. Mangrove swamps, mountains, rainforests, waterfalls, rivers, and dense forests are home to an array of wildlife, birds, and marine life. Ancient Mayan archaeological sites, the world’s second largest barrier reef, and the longest cave system in Central America are a few attractions. Divers and snorkelers visit to explore the Great Blue Hole, a UNESCO World Heritage Site, Hol Chan Marine Reserve, Shark Ray Alley, and Belize Barrier Reef.