Puerto Rico · 17th century
Castillo San Cristóbal (English: Saint Christopher Castle) is a fortress in the Old San Juan historic quarter of San Juan, the capital municipality of Puerto Rico, known for being the largest fortification built by the Spanish in the New World. Dating back to defense expansions following attacks by the English in 1598 and Dutch in 1625, it was first constructed in 1634 as the Caballero de San Miguel (Saint Michael Cavalier) and the Garita del Diablo ("devil’s sentry box"). Over the next 150 years, especially in the reign of King Charles III of Spain, it continued to be developed into a bastion fort with outer ravelins and batteries to reach its largest size in 1783.
Rising 150 ft from the Atlantic shoreline, the three-level edifice stands on a hill at the northern coastline of San Juan Islet, guarding the land entry to Old San Juan. Alongside El Morro, La Fortaleza, and other forts part of the Walls of Old San Juan, it protected strategically and militarily important Puerto Rico, or La Llave de las Indias (The Key to the Indies), from invasion by competing world powers during the Age of Sail. It was designated a World Heritage Site by UNESCO in 1983.
Text adapted from “Castillo San Cristóbal (San Juan)” on Wikipedia, CC BY-SA 4.0.
Castillo San Cristóbal ranks #1,893 of 9,079 worldwide in the atlas's castle fame ranking, and #3 of the 4 mapped in Puerto Rico. Founded 1634, it is older than 28% of the atlas's dated landmarks — one of 721 atlas entries founded in the 17th century. Its Wikipedia articles were opened 3,580 times in the last 60 days, more than 81% of the atlas. 3 more atlas landmarks stand within 25 km. See how Puerto Rico compares in the castle statistics.
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