National Parks in Puerto Rico

San Juan National Historic Site, Puerto Rico

San Juan National Historic Site, Puerto Rico

Photo by: National Park Service

National Park Service

San Juan

National Historic Site, San Juan, PR

national park, off the beaten path, outdoors and adventure, san juan historic site, puerto rico

The massive fortifications, cannons, dungeons and turrets overlooking the azure Caribbean are a sight to behold, but there’s more hidden underground. A network of “secret” defensive tunnels runs below the fortifications of Castillo San Cristobal, and only two 15-person tours are given every weekend to those who sign up first.

Photo by: By AlbertHerring (Own work) [CC BY-SA 3.0], via Wikimedia Commons

By AlbertHerring (Own work) [CC BY-SA 3.0], via Wikimedia Commons

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