San Juan, the capital of the Greater Antilles island of Puerto Rico, is known as the 'oldest American city'. It was from here that the expeditions set out to explore the New World. The historic old town with the university, the fort 'La Fortaleza', the gothic cathedral and the historic buildings dating from the Spanish colonial era are all well worth a visit. Since 1983, San Juan has been a UNESCO World Heritage Site. 'New' San Juan boasts luxurious resorts, hotels, casinos and exclusive discos, while nature lovers can explore the nearby rainforest with its mountain lakes and waterfalls.