San Juan is the capital of Puerto Rico, and, at about 318,000 (2019), its largest city. San Juan is the oldest city under the control of the United States. San Juan is in the north-east of Puerto Rico, and features distinctly century-old architecture, such as Spanish military forts built from the 1540s to 1800s, an active harbor, and a very active economic area in the Hato Rey district. San Juan has magnificent beaches, hotels, plazas, historic sites, and museums.

- Wikivoyage