Tourist attractions in Puerto Rico include the San Juan National Historic Site, Old San Juan, Flamenco Beach, Castillo San Felipe del Morro and Castillo de San Cristobal, as of 2016. Additional attractions include the El Yunque Rain Forest, Carabali Rainforest Park, Blue Beach and Museo de Arte de Ponce.
The U.S. National Parks Service operates Puerto Rico's San Juan National Historic Site, which is also a World Heritage Site. The Spanish built many of the fortifications at the site, a process that took more than 200 years. Castillo San Felipe del Morro and Castillo San Cristobal are among the locations within the park, the former atop a promontory that provides scenic views of the entrance to the San Juan Bay. Castillo San Cristobal provides access to Old San Juan and came about between 1634 and 1790. Covering 27 acres, San Cristobal is one of the largest Spanish fortifications in the United States.
The El Yunque Rain Forest is located in the Luquillo Mountains and provides hiking and wildlife viewing for tourists who make it to the top of the mountain, where the rain forest is located. There is no entrance fee, and tourists drive to the top. Tourists can obtain camping permits to stay overnight in the forest.