You are about to be one of the two million people a year who visit Castillo San Felipe del Morro. This massive, six-level fortress dominates 70 acres at the northwest tip of Isleta de San Juan. El Morro was a formidable military post for 422 years, beginning with the Spanish in 1539 and ending with the U.S. Army in 1961. This must-see citadel was designated as a UNESCO World heritage Site in 1983.
