The island of Puerto Rico with an area of 8,900 km2 is the smallest of the Greater Antilles. It offers easy access to and from many destinations in the Americas. Puerto Rico not only harbors a diversity of tropical ecosystems, including beaches, coral reefs, mangrove swamps, dry, wet, and cloud forests and the amazing limestone or “mogote” formations, but also a great cultural diversity. San Juan, the capital of Puerto Rico and seat of the University of Puerto Rico at Rio Piedras, is a vibrant metropolis that combines colonial (Old San Juan) and modern architecture with a dynamic art scene. Spanish is the main language of the island, but English is widely spoken.