San Juan, Puerto Rico's capital and largest city, sits on the island's Atlantic coast. Its widest beach fronts the Isla Verde resort strip, known for its bars, nightclubs and casinos. Cobblestoned Old San Juan features colorful Spanish colonial buildings and 16th-century landmarks including El Morro and La Fortaleza, massive fortresses with sweeping ocean views, as well as the Paseo de la Princesa bayside promenade. Prepare to be captivated by the natural enchantment of Puerto Rico, its vibrant culture, and old-world elegance. San Juan is one of the most unique and accessible places to travel under the U.S. Flag and far from an ordinary Caribbean destination.