San Cristobal Fort, Old San Juan PR.

Located a fifteen to twenty minute walk from El Morro, Fort San Cristobal guarded old San Juan from approaches by land. Construction of this 27 acre fort began in 1634 and was finished in 1790. This fort features five independent units, each connected by moat and tunnel. Each independent unit was designed to be completely self-sufficient should the others fall. A labyrinth of tunnels crisscross deep underground where dungeons are located. A guided tour will tour the tunnels and show you where the first shots of the Spanish-American war were fired. These tours run every hour on the hour. Don’t miss the Garita del Diablo or the Devil’s Guerite, a sentry box where according to legend, devours soldiers sent there to guard. read more...