San Juan travel guide
Puerto Rico · Top sights · trending spots
Old San Juan is paved with blue-grey cobbles cast from furnace slag that arrived as ballast in Spanish ships, and guarded by two forts that are World Heritage.
Puerto Rico is American territory, so no passport is needed from the mainland. El Yunque is the only tropical rainforest in the US forest system, and Mosquito Bay on Vieques is the brightest bioluminescent bay measured anywhere.
Top 10 sights in San Juan
Ranked by Wikipedia language editions — proven fame.
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Castillo San Felipe del Morro
A fortress begun in 1539 as a single tower and rebuilt over two and a half centuries into six levels rising forty-three metres from the sea. It held off Drake and the Dutch, fell only once, to the English in 1598, and the United States mounted anti-submarine guns on it in 1942.
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Cathedral of San Juan Bautista
A cathedral begun in 1521 and the second oldest in the Americas, though the present Gothic vaulting is a rebuilding after a hurricane stripped the first one. Ponce de León's marble tomb is in the transept and the body of a Roman martyr lies in a glass case beside it.
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- © Yarfpr · CC BY-SA 4.0
- © Yarfpr · CC BY-SA 4.0
- © Yarfpr · CC BY-SA 4.0
Popular tickets & tours in San Juan
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Based on 2025 Wikipedia pageviews — popular places beyond the top 10.
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Puerto Rico Museum of Art
The island's main art museum, opened in 2000 in a 1920s hospital building with a new wing behind, holding eighteen galleries of Puerto Rican art from the colonial portraitists to the present. Its garden and Campeche's eighteenth-century paintings are the strengths.
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