Puerto Rico GuidePuerto Rico is a Caribbean island that is a self-governing commonwealth of the United States of America. Located in the Caribbean Sea to the east of the Dominican Republic and west of the U.S. HotelsFind hotels in San Juan, Vieques, Rincon, Mayaguez and more. San JuanSan Juan is the capital of Puerto Rico, and at about 395,000 its largest city. It has one of the best harbors in the Caribbean. ViequesVieques is a Caribbean island belonging to Puerto Rico, also known as Isla Nena or Little Girl Island. RincónFor other places with the same name, see Rincon Rincón The Town of Beautiful Sunsets is a town located in the Porta del Sol region of Puerto Rico, and is southwest of Aguadilla. Northern CoastThe Northern Coast of Puerto Rico is home to the San Juan metropolitan area. Porta del SolPorta del Sol is the region around the west coast of Puerto Rico. Eastern CoastThe Eastern Coast of Puerto Rico is known for its beautiful beaches and Yunque National Forest. CulebraCulebra is a small Caribbean island, mostly covered in nature preserve that lies about 20 miles east of Puerto Rico. Porta CaribePorta Caribe is the southern region of Puerto Rico. La MontañaLa Montaña is the central, mountainous region of Puerto Rico.