Fortín San Juan de la Cruz, most commonly known as El Cañuelo, was built on Isla de Cabras in the Palo Seco barrio of the municipality of Toa Baja, at the western end of the entrance to San Juan Bay, in Puerto Rico. The square coastal fort has massive sandstone walls that date back to the 1630s. Although the U.S. Navy bombarded the fort in 1898, the fort survived. Today the fort is part of the San Juan National Historic Site, which is listed as a UNESCO World Heritage Site and on both the National Register of Historic Places and the Puerto Rico Register of Historic Sites and Zones. The fort is not open to visitors, but it can be viewed from its exterior.
The Las Cabañas Bridge is a historic highway bridge in Adjuntas municipality, Puerto Rico. Built in 1919 to provide access to a key coffee-producing region, it was financed by nearby plantations through public subscription. Designer Rafael Nones and builder Félix Benítez Rexach, two of the most prominent figures in Puerto Rican bridge construction in the early 20th century, used a unique combination of steel and concrete technologies to produce a girder design unlike any other on the island and possibly beyond.
El Parterre is a landscaped park in Aguadilla, Puerto Rico, that was built in 1851. The park encloses the Ojo de Agua, also referred to as Manantial Ojo de Agua, a natural spring which was a source of water for Spanish soldiers, and the source of a small rivulet locally called Chico River which empties into the Aguadilla Bay.
Guánica Light was a historic lighthouse located in the municipality of Guánica, Puerto Rico in the Guánica State Forest. It was first lit in 1893 and deactivated in 1950. The light marked the entrance to Guánica Bay and bridge the gap between Los Morrillos Light and Caja de Muertos Light.
The Villarán Bridge, also known as the Canóvanas Bridge, is a historic bridge over the Canóvanas River in Canóvanas, Puerto Rico. Built in 1892 on the highway between Río Piedras and Río Grande, its iron superstructure was imported from Europe and set on masonry abutments. It is the best-preserved example of an Eiffel pony truss bridge in Puerto Rico or the United States. By 1994, the bridge had been replaced by an adjacent span for vehicular use, but it remained open for pedestrian use.
Manatí Bridge at Mata de Plátano, also known as Puente Juan José Jiménez and listed as Bridge #321 in Puerto Rico's bridge inventory, was built in 1905 in Hato Viejo, Ciales, Puerto Rico. It was listed on the National Register of Historic Places in 1995 and on the Puerto Rico Register of Historic Sites and Zones in 2001.
Bridge No. 122, spanning the Santiago River near Naguabo, Puerto Rico, is significant as "one of the earliest and most elegant examples of concrete beam bridges in Puerto Rico". Built in 1918, it was "futuristic" for its time and has noteworthy architectural detail relative to others. It was designed by Rafael Nones and built by Felix Benitez-Rexach, both engineers, both regarded as masters in their work. Its construction was financed by Puerto Rico's second public bond issue for public works, in 1916, which raised $2 million.
The Puente Blanco is a historic railway bridge that spans hundred and fifty feet deep and thirty six metres wide gorge across the Quebrada Mala Canyon, near Quebradillas, Puerto Rico. The bridge is the only reinforced concrete bridge in the area and the highest of its kind in Puerto Rico. It was built in 1922 by the American Railroad Company to replace a 1907 steel bridge as part of the construction of the national railway system that connected the island during the first half of the twentieth century. It was built on a concrete platform that held the existing steel bridge without interrupting the passage of the railway. The new bridge could hold two locomotives of 84 tons each. It was designed by Etienne Totti from Yauco who was the head engineer for the company. The bridge was restored by the municipality of Quebradillas, unfortunately as part of the repair the base was widened altering the character of the structure and hindering the view of the bridge. It was listed on the National Register of Historic Places in 1984 and on the Puerto Rico Register of Historic Sites and Zones in 2000.
Plata Bridge, listed in Puerto Rico's bridge inventory as Bridge #374 and now also known as Antiguo Puente Plata, was built in 1908. It is significant as "the only extant large multi span truss bridge in Puerto Rico", according to its nomination document for listing on the National Register of Historic Places. It includes two Parker truss spans and was built in 1908. It brought what is now Puerto Rico Highway 167 across the Rio La Plata, spanning from Bayamon municipality and into Naranjito, and connected several mountain towns to the coastal road along Puerto Rico's north coast.
Hacienda Santa Rita is located in the municipality of Guánica, Puerto Rico. It is also known as Casa Madre y Noviciado de las Hermanas Dominicas de Fatima and was built in 1800 by Don Mariano Quiñonez.
The Arenas Bridge is a truss bridge built in 1894 between the municipalities of Cayey and Cidra in Puerto Rico. Also known as Puente Rio La Plata, it was the longest bridge constructed in Puerto Rico during the Spanish colonial period. It crosses the Rio de la Plata, the longest river in Puerto Rico. According to the U.S. National Park Service, "[t]his is the most important metal bridge in Puerto Rico from the period." The bridge is still standing.
The Hondo River Bridge was a historic bridge over the Hondo River in Comerío municipality, Puerto Rico. As of 1995, it was the oldest bridge truss in Puerto Rico, employing a double Warren pony truss design and unique open web transverse joists. It was originally installed in 1881 as one of three spans of the Reyes Católicos Bridge over the Plata River on the San Juan–Mayagüez road, using metal parts fabricated in Belgium. After a hurricane destroyed one of the other spans of the Reyes Católicos Bridge in 1899, this surviving span was moved and re-installed on new abutments under the supervision of engineer Rafael Nones in 1908, as part of the Comerío–Barranquitas road. It was finally removed and replaced in 2001.
Central High School, also known as La Central or La Central High, is a school located in Santurce barrio of San Juan, Puerto Rico.
The General Norzagaray Bridge is a brick and masonry barrel vault bridge built in 1855 in San Juan, Puerto Rico. Also known as Puente de los Frailes, it brings what is now Puerto Rico Highway 873 across Frailes Creek, a tributary to the Guaynabo River. It has eight 9.8-metre (32 ft) barrel vault spans. Its total length is 120.7 metres (396 ft) and its roadway width is 7.00 metres (22.97 ft). It was listed on the National Register of Historic Places (NRHP) in 1995, and on the Puerto Rico Register of Historic Sites and Zones in 2000.
The Río Matón Bridge, in Matón Abajo, a barrio of Cayey, Puerto Rico, was built in 1886. It was listed on the National Register of Historic Places in 1995 and on the Puerto Rico Register of Historic Sites and Zones in 2000.
Cambalache Bridge or Puente Francés is a bridge built in 1893 which spans the Río Grande de Arecibo from Cambalache barrio to Tanamá barrio in Arecibo. It is located 100 meters west of Puerto Rico Highway 2, at kilometer 72.
Marqués de la Serna Bridge, also known as Bayamón Bridge and Bridge #379, is a historic rolled iron segmented arch bridge that crosses the Bayamón River, located between the barrios of Bayamón Pueblo and Juan Sánchez in the Puerto Rican municipality of Bayamón. Its lowered arches, similar to those of the Pont d'Arcole in Paris, are unique in Puerto Rico. The bridge was added to the United States National Register of Historic Places on July 19, 1995, and to the Puerto Rico Register of Historic Sites and Zones in 2000.
The Doña Antonia Ramírez Residence, also known as the Hernández Residence, is a historic Italianate-style residential building located in the Maguayo barrio of Dorado, Puerto Rico. The house was added to the United States National Register of Historic Places in 1988, and to the Puerto Rico Register of Historic Sites and Zones in 2000.
The Río Piedras Bridge or Piedras River Bridge, also designated as Bridge #3, is a historic 19th-century barrel vault bridge located in the former town of Río Piedras, today part of the city of San Juan, Puerto Rico, that spans across the Piedras River. The bridge was built in 1853 as part of the development of the Carretera Central that linked San Juan to Ponce, making it the oldest still-existing bridge of said route. Today the bridge is still stable and usable, and it can be found near the entrance of the University of Puerto Rico Botanical Garden. It was added to the National Register of Historic Places in 1995 and on the Puerto Rico Register of Historic Sites and Zones in 2000, and it is considered to be the best-preserved example of a Spanish masonry arch bridge anywhere in Puerto Rico and the United States.
The Prieto River Bridge, also known as Bridge #261 and better known as the "Del Treinta" Bridge, is a historic bridge located in the Indiera Alta barrio of the municipality of Maricao, Puerto Rico. It was built in 1924 as part of a highway construction boom that occurred in the island during the 1920s. The bridge spans across the Prieto River in the Luis Muñoz Marín Scenic Route and was added to the National Register of Historic Places in 1995 and to the Puerto Rico Register of Historic Sites and Zones in 2001.
