Castillo San Cristóbal

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Located on the northeast corner of Old San Juan, Fort Cristobal is one of the largest fortresses ever built in the Americas. Construction commenced in 1634 and the fort was redesigned in the 19th Century. With its impressive walls reaching over 100 feet (30.48 meters) above the crashing waves, its primary function was to guard San Juan against land attacks. San Cristobal is attached to El Morro by colossal walls filled with cannon-firing positions. Daily free tours are offered in English and in Spanish.

Location:  Calle Norzagaray

Business hours:  Mo-Su 9:00 a.m.-6:00 p.m.