San Juan is the capital city and most populous municipality in the Commonwealth of Puerto Rico, an unincorporated territory of the United States. As of the 2020 census, it is the 57th-largest city under the jurisdiction of the United States, with a population of 342,259. San Juan was founded by Spanish colonists in 1521, who called it Ciudad de Puerto Rico.
Travel tip: The festive city of San Juan is the
perfect place to experience true Puerto Rican culture. Get to know its roots by exploring the vibrant neighborhood of El Viejo San Juan (Old San Juan), which consists mostly of Spanish colonial buildings. …tripadvisor.com
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