Old San Juan

Old San Juan is a historic district located at the "northwest triangle" of the islet of San Juan. Its area roughly correlates to the Ballajá, Catedral, Marina, Mercado, San Cristóbal, and San Francisco subbarrios of barrio San Juan Antiguo in the municipality of San Juan, Puerto Rico. Old San Juan is the oldest settlement within Puerto Rico and the historic colonial section of the city of San Juan. This historic district is a National Historic Landmark District and is listed on the National Register of Historic Places as the Old San Juan Historic District. It is also a UNESCO World Heritage Site.

Old San Juan is located on a small and narrow island which lies along the north coast, about 35 miles from the east end of Puerto Rico, and is united to the mainland of Puerto Rico by three bridges. It is bounded by the Atlantic Ocean to the north and to the south by San Juan Bay —which lies between the city and the mainland. On a cliff about 100 feet high, at the west end of the island and commanding the entrance to the harbor, rise the battlements of Fort San Felipe del Morro, in which there is a lighthouse.

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