Casa Rosa

The School of Tropical Medicine (Spanish: Escuela de Medicina Tropical), was an educational institution created in 1926 by an act of the Puerto Rican Legislature, to further the research initiated by the Anemia Commissions and the Institute of Tropical Medicine on anemia and its causes. The institution existed as an independent entity until 1949, when it was integrated into the School of Medicine of the University of Puerto Rico.

The Puerto Rico National Guard Museum (Spanish: Museo de la Guardia Nacional de Puerto Rico) is a museum in San Juan, Puerto Rico dedicated to the Puerto Rico National Guard. The museum was inaugurated on August 18, 2002 by Major General Emilio Díaz Colón.

The former Spanish Navy Arsenal of San Juan (Spanish: Arsenal de la Marina Española), historically known as the San Juan Naval Station and also known as the Navy Arsenal of La Puntilla (Arsenal de la Marina de la Puntilla), the Arsenal of San Juan (Arsenal de San Juan) or simply El Arsenal, is a historic building complex and former Spanish Navy armory located in La Puntilla, a former neighborhood of the Old San Juan historic district in San Juan, Puerto Rico. It was built in 1800 at the site of the old main port of San Juan, today the Old San Juan marine and cruise piers area between the former United States Custom House and the Coast Guard Station.

The José Celso Barbosa Graded School (Spanish: Escuela Graduada José Celso Barbosa) is a historic school building located in the Puerta de Tierra historic district in the city of San Juan, Puerto Rico. The school is named after Puerto Rico statehood movement founder Dr. José Celso Barbosa and has been listed in the National Register of Historic Places since 1989. The school was built between 1924 and 1927 and designed by the firm del Valle & Co. in a Neoclassical-style with the intention of making it a public secondary school for recently graduated students from the nearby Brambaugh School. It forms part of the monumental sequence of buildings and memorials that contribute to the Puerta de Tierra Historic District which also includes the Capitol of Puerto Rico.

The Senate of Puerto Rico (Spanish: Senado de Puerto Rico) is the upper house of the Legislative Assembly of Puerto Rico, the territorial legislature of Puerto Rico. The Senate, together with the House of Representatives of Puerto Rico, control the legislative branch of the government of Puerto Rico. The structure and responsibilities of the Senate are defined in Article III of the Constitution of Puerto Rico which vests all legislative power in the Legislative Assembly. Every bill must be passed by both, the Senate and the House, and signed by the Governor of Puerto Rico in order to become law.The Senate has exclusive power to try and to decide impeachments. The constitution also establishes that all secretaries appointed by the governor to the different executive departments, as well as all judges and the Comptroller, require the advice and consent of the Senate. Justices of the Supreme Court can not assume office until after confirmation by the Senate.The Senate has 27 members. Sixteen are elected from senatorial districts, with two senators per district, while an additional 11 which are elected at-large.The Senate has been meeting since 1917, after the enactment of the Jones–Shafroth Act established the body formally. The current session is the 27th Senate of Puerto Rico which has a majority from the Popular Democratic Party of Puerto Rico; giving the party control over the Senate without political opposition including constitutional amendments.The Senate, along with its members and staff, are housed in the eastern half of the Capitol of Puerto Rico. These buildings are usually the Rafael Martínez Nadal Senate Annex Building, the Luis Muñoz Marín Office Building, the Antonio R. Barceló Building, the Luis A. Ferré Building, the Ramón Mellado Parsons Office Building and the Baltasar Corrada del Rio Office Building.

The Capitol of Puerto Rico (Spanish: Capitolio de Puerto Rico) is located on the Islet of San Juan just outside the walls of Old San Juan. The building is home to the bicameral Legislative Assembly, composed of the House of Representatives and Senate. The building is located in the Puerta de Tierra sector of San Juan. The Capitol is also commonly referred to as the Palace of the Laws (Spanish: Palacio de las Leyes).

El Monumento de la Recordación (English: Monument of Remembrance) is a memorial monument and monolith erected in San Juan, Puerto Rico that honors Puerto Ricans who have fallen in combat in service of the United States Armed Forces. The monument was unveiled on May 19, 1996 as a granite wall engraved with the names of Puerto Rican soldiers who died during combat. As of 2009, the monument was etched with the names of more than 2,000 service members.The monument largely contains the names of soldiers who had a Puerto Rico address at their time of enlistment and/or death. If a soldier had a stateside address their name is most likely not on the monument. Because so many Puerto Ricans in the military list a United States address, their participation is underrepresented in statistics.A sculpture by Victor Gutierrez called Llama de la eternidad (Flame of eternity) is located in the center of monument.A service is held each year on Memorial Day at the Monumento de la Recordación. In 2019, attendees learned that two fallen soldiers from Puerto Rico had been recently identified as part of the Recovery of US human remains from the Korean War.

The Isleta de San Juan (Spanish for Islet of San Juan) is a 3-square-mile (7.8 km2) island in the San Juan Bay in the Atlantic coast of northern Puerto Rico. Home of Old San Juan, it is the site of the oldest permanent European settlement in Puerto Rico (1521), and the second oldest European settlement in the West Indies after Santo Domingo (1496). Due its strategic location in the Caribbean during the Spanish colonization of the Americas it is home to a city wall and a number of militaristic buildings such as El Morro Castle. Today it is also home to many of Puerto Rico's government buildings such as the territory's capitol building (El Capitolio).

The Church, School, Convent and Parish House of San Agustín is a National Register of Historic Places (NRHP)-listed historic religious complex located in the Puerta de Tierra historic district of San Juan Antiguo in the city of San Juan, Puerto Rico. The complex consists of the Church of St. Augustine (Spanish: Iglesia de San Agustín), its adjacent Augustinian convent (also housing the Catholic school) and the parish house. The church itself was one of the first structures to be built using only concrete in the island and for this reason it is also listed in the Inventory of Historic Churches of Puerto Rico in 1990 in addition to being listed in the NRHP since 1985. The church complex is a contributing property, and, along the Capitol of Puerto Rico, it forms part of the monumental sequence of buildings, memorials and parks along the Ponce de León Avenue that constitute the Puerta de Tierra Historic District.

Casa de España is the headquarters of a private social organization whose members are those of Spanish descent in San Juan, Puerto Rico on Avenida de La Constitución in Old San Juan.

San Juan Antiguo (not to be confused with the historic district of Old San Juan which is located within this district), is a barrio located in the municipality of San Juan in the Commonwealth of Puerto Rico. San Juan Antiguo has 7 subbarrios. In 2010, San Juan Antiguo had a population of 7,085 inhabitants and a population density of 2,681.9 people per km2. San Juan Antiguo is entirely located within the Isleta de San Juan, the islet off the coast of Puerto Rico where Old San Juan was settled, connected to the mainland by bridges and a causeway.

The Biblioteca Carnegie (or Carnegie Library) on Avenida Juan Ponce de León in Puerta de Tierra, San Juan, Puerto Rico is a NRHP-listed Carnegie library funded through a $100,000 donation from the Carnegie Foundation, becoming Puerto Rico's first purpose-built library when it was completed in 1915.