La Fortaleza and San Juan National Historic Site was UNESCO World Heritage-listed in 1983. La Fortaleza, completed by the Spanish in the 1530s, has served as the governor's residence continuously ever since, making it the oldest executive seat in continuous use anywhere in the New World, predating the United States by over two centuries. Admission to the site's two great forts costs $3 for one or $5 combined for adults 16 and up, with children 15 and under free.
La Fortaleza has served as the governor's residence without interruption since the 1530s, an unbroken continuity that's the specific reason it holds the title of oldest executive seat in the New World, not simply an old building that happens to still stand.
Castillo San Felipe del Morro and Castillo San Cristóbal were built to defend against different threats, sea attack and land attack respectively, two genuinely distinct fortifications with separate admission and separate stories, not a single unified structure.
San Cristóbal alone covers more than 27 acres, a scale worth knowing before assuming a single combined ticket is a small, quick stop.
San Juan sits on Puerto Rico's northern coast, with Old San Juan, home to the National Historic Site, forming the historic core of the city.
San Juan rewards understanding the unbroken 500-year continuity of La Fortaleza alongside the two distinct forts built to defend it. Each fort's own story is covered in full below.
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