By a February 14, 1949 decree the site was established, and noted the need to protect the fortifications as monuments as well as preserve their historical and architectural value. Listed on the National Register of Historic Places on October 15, 1966.
On December 6, 1983, the park and La Fortaleza were together designated a World Heritage Site under the name "La Fortaleza and San Juan National Historic Site in Puerto Rico". Only 12 national park areas in the United States are considered World Heritage Sites.
Looking out of Fort San Cristobal
Official San Juan National Historic Site sign.
Main offices of the San Juan National Historic Site.