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Michael Harris · Apr 22, 2026San Juan (Spanish words for Saint John) is the capital and most populous municipality in the Commonwealth of Puerto Rico, an unincorporated territory of the United States. It was founded by Spanish colonists in 1521 as Ciudad de Puerto Rico (or the ‘Rich Port City.’ San Juan is the second-oldest European-established capital city in the Americas and a major cruise ship destination. You should visit here for its sandy beaches, historic forts, a rich colonial architectural heritage, and a loud musical ambiance. This is seconded by several hotspots that offer fine dining and entertainment scenes.
Things to do in San Juan
San Juan Viejo (or Old San Juan)
Home to almost 500 years of world-class architectural and historical identity, Old San Juan is the older part of the city of San Juan. Visitors are wowed with its historic forts and more than 400 beautifully restored 16th- and 17th-century colonial buildings. A star highlight here is the Fuerte San Felipe del Morro, a fortress set on a raised land overlooking the sea.
Fuerte San Felipe del Morro (El Morro)
Fuerte San Felipe del Morro is a 16th century fortress built on a point of land just above the Atlantic Ocean. It was completed over a period of 250 years because it was continuously subjected to many pirate raids and attacks from the sea pirates. The fort today features a maze of ramps, outposts, barracks, dungeons, and tunnels that are all dotted with circular sentry boxes.
Castillo de San Cristóbal
The Castillo de San Cristóbal is the largest fort ever built by the Spanish in the Americas or the New World. The fort, built between 1634 and 1790, is spread across more than 27 acres with 5 individual units connected by moat and tunnel. The difference between El Morro and the Castillo is that the former was built to guard against attacks by sea while the latter was built to defend against a land-based attack.
Best Time to Visit San Juan
Winter season (the months from December to April) are the best to book your flights from Rochester to San Juan. It is the season when you can have a great time at beach, indulging in water sports. Book your flights from ROC to SJU during summers to enjoy famous cultural events like San Sebastián Street Festival, Maricao Coffee Festival, Casals Festival, and Ponce Carnival. It is advised to book San Juan flights in advance to avoid paying more during peak season.

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* Unless otherwise noted, fares are one way/roundtrip. Fares include all fuel surcharges, taxes & fees and our service fees . Displayed fares are based on historical data, are subject to change. Tickets are nonrefundable, nontransferable, non-assignable and subject to airline restrictions. Name changes are not permitted. There is a higher probability of seats at the stated fare being available on Tuesday, Wednesday and Thursday, and it may require an advance purchase of up to 21 days and/or a Saturday night stay at the destination. Certain blackout dates may apply. Holidays and weekend travel may have a surcharge. See Terms and conditions for other restrictions..

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