what is the capital of puerto rico

The capital of Puerto Rico is San Juan. It is the most populous municipality in the Commonwealth of Puerto Rico and is located on the northern coast of the island, on the Atlantic Ocean. San Juan was founded by Spanish colonists in 1521, who called it Ciudad de Puerto Rico ("City of Puerto Rico", Spanish for rich port city) . It is the third oldest European-established capital city in the Americas, after Santo Domingo, in the Dominican Republic, founded in 1496, and Panama City, in Panama, founded in 1521, and is the oldest European-established city under United States sovereignty. San Juan is the territorial capital of the Commonwealth of Puerto Rico, and it is home to the executive, legislative, and judicial branches of the Puerto Rican government.