Castillo de San Felipe del Morro was declared a World Heritage site in 1983 and along with Fort San Cristóbal form the San Juan National Historic Site. This fort is on a rocky promontory that dominates the entrance of San Juan Bay. It was built in 1540 and was continually added to until 1787 to the make the fortified castle on display today. In 1992, the fort's grounds were restored to their eighteenth century appearance. Visitors can walk the forts grounds and the various chambers within the castle. The site includes a museum that provides a history of the fort and guided tours are offered hourly. There are also informational brochures that allow visitors to learn about the history of the fort while walking around on their own. El Morro used to be connected to Fort San Cristóbal by underground tunnels. Today, two trolleys ferry visitors back and forth instead.
Castillo de San Felipe del Morro
Calle Norzagaray
San Juan, Puerto Rico
787-729-6960
Vieques is several miles off the east coast of Puerto Rico's main island. It is known for its bioluminescent bay that glows at night. The bay is home to about 720,000 single-celled bioluminescent dinoflagellates (Pyrodimium bahamense) per gallon of water. These organisms emit a flash of bluish light when agitated. The concentration of these bioluminescent creatures create enough light that visitors can read books off their glow. There are pontoon boat tours, kayak trips and opportunities to swim in the glow of the bay.
Island Adventures Biobay Eco-tours
P.O. Box 1526
Vieques, Puerto Rico 00765
787-741-0720
biobay.com
The Rio Camuy Cave Park is a 268-acre park that is home to subterranean caverns carved out by the Camuy River. It is the third largest cave system in the world. One cave, Cueva Clara, measures 695 feet deep. So far, 16 entrances have been found and seven miles of cave passages have been explored. The trails lead visitors down 200 feet, through fern-filled ravines that open to stalagmite and stalactite structures. The river that winds through the caves is home to numerous species of blind fish.
The park also has picnic areas, walking trails and food stands outside the caves. Reservations are recommended and can be made by calling the park grounds.
Río Camuy Cave Park
Camuy, Puerto Rico
787-898-3100