Many garitas 'sentry boxes', such as this one in Fort San Felipe del Morro, were constructed by the Spaniards to guard Old San Juan against enemy invaders. Long after their decommission, they now commonly used as the iconic representation of Puerto Rico's history and tourism.
City halls in Puerto Rico, such as the one in Ponce, are usually the centerpieces of each Municipality's town center. Most are located across the town plaza, and are frequented by the public and tourists alike.
The word Jíbaro, is commonly used in Puerto Rico to refer to mountain dwelling peasant, which has come to represent the Puerto Rican people in all their historic, ethnic and cultural complexity. The image of a jíbaro is used in all forms of Puerto Rican art, including this monument in Cayey.
The 1985 Mameyes landslide in Ponce was one of the worst landslide disasters in North American history. Caused by excessive rains, it destroyed more than 100 homes and killed anywhere from 129 to 300 residents.
The Arecibo Observatory is the world's largest single-aperture telescope ever constructed. The telescope's dish has a diameter of over 1,000 ft (305m) and covers over 18 acres. The receiver array is suspended 450 ft (150m) above the dish, supported by three concrete towers each measuring between 265 ft (80m) and 365 ft (110m).
Puerto Rico has over 50 rivers, most originating from the island's central mountainous region which receives heavy rainfall. The largest of these rivers, Rio de la Plata, measures approximately 60.5 mi. (97 km), starting at an altitude of 2,625 ft (800 m) above sea level in Cayey before ending between the northern coastal towns of Dorado and Toa Baja.
Old San Juan is characterized by a mixture of Spanish architecture, cobblestone streets and open public plazas. Most buildings and plazas are maintained to preserve their history, with some, such as the Quinto Centenario Plaza being modernized with recent architecture and works of art.