Equestrian monument to General Manuel Belgrano

Plaza de Mayo is a station on Line A of the Buenos Aires Underground. This station belonged to the first section of line opened on 1 December 1913, linking the station with the station of Plaza Miserere.

The Revolution of 11 September 1852 was a conflict between the Province of Buenos Aires and the government of Justo José de Urquiza after the latter triumphed over Juan Manuel de Rosas at the Battle of Caseros. A period known as "National Organization" was initiated after the Battle of Caseros. Every political faction agreed on authorizing a national Constitution. However, in opposition to the rest of the country, the ruling upper class in Buenos Aires aspired to impose political requirements on the Argentine provinces, so as to maintain the traditional political and economic preeminence of the capital city. The result was a ten-year separation between the Argentine Confederation and the State of Buenos Aires. Both states claimed to be part of a single nation. But in reality, they behaved like separate states.

Buenos Aires City Hall (Spanish: Palacio Municipal de la Ciudad de Buenos Aires; lit. "Municipal Palace") was, until 2015, the seat of the Office of the Chief of Government of Buenos Aires, the capital city of Argentina. From its construction in 1914 to the reformation of the city's constitution in 1996, the building was the seat of the City Municipality. It faces the Plaza de Mayo, across from the Casa Rosada presidential palace, in the barrio of Monserrat. Since 2015, the Office of the Chief of Government has been located at a new building in the barrio of Parque Patricios. The City Hall still houses various government offices of the city government.

The Bombing of Plaza de Mayo was a massacre which took place in Buenos Aires, Argentina, on 16 June 1955. On that day, 30 aircraft from the Argentine Navy and Air Force strafed and bombed Plaza de Mayo square in Buenos Aires in the largest aerial bombing ever on the Argentine mainland. The attack targeted the adjacent Casa Rosada, the official seat of government, as a large crowd was expressing support for president Juan Perón. The strike took place during a day of official public demonstrations to condemn the burning of a national flag allegedly carried out by detractors of Perón during the recent procession of Corpus Christi. The action was to be the first step in an eventually aborted coup d'état. The number of identified bodies was put at 308, including six children; an unknown number of victims could not be identified.The disregard for civilian lives and the violence with which the act was carried out has prompted comparisons with the wave of state terrorism during the dictatorship of 1976-1983.

The Plaza de Mayo (Spanish pronunciation: [ˈplasa ðe ˈmaʝo]; English: May Square) is a city square and main foundational site of Buenos Aires, Argentina. It was formed in 1884 after the demolition of the Recova building, unifying the city's Plaza Mayor and Plaza de Armas, by that time known as Plaza de la Victoria and Plaza 25 de Mayo, respectively. The city centre of Buenos Aires, Plaza de Mayo has been the scene of the most momentous events in Argentine history, as well as the largest popular demonstrations in the country. On the occasion of the first anniversary of the May Revolution in 1811, the Pirámide de Mayo (English: May Pyramid) was inaugurated in the square's hub, becoming Buenos Aires' first national monument. It is located in the financial district known as microcentro, within the barrio (English: neighborhood) of Monserrat. It is bounded by Bolívar, Hipólito Yrigoyen, Balcarce and Avenida Rivadavia streets; and from its west side three important avenues are born: Avenida Presidente Julio Argentino Roca, Avenida Roque Sáenz Peña and Avenida de Mayo. In the square's surroundings are several significant monuments and points of interest: the Cabildo, the Casa Rosada (seat of the President of Argentina), the Metropolitan Cathedral, the Buenos Aires City Hall, and the Bank of the Argentine Nation's headquarters. Underneath its lands are the Underground stations of Plaza de Mayo (Line A), Catedral (Line D), and Bolívar (Line E).

The Pirámide de Mayo (Spanish pronunciation: [piˈɾamiðe ðe ˈmaʝo]; English: May Pyramid), located at the hub of the Plaza de Mayo, is the oldest national monument in the City of Buenos Aires. Its construction was ordered in 1811 by the Primera Junta to celebrate the first anniversary of the May Revolution. It was renovated in 1856, under the direction of Prilidiano Pueyrredón. In 1912, after having undergone many modifications, it was moved 63 metres (68.9 yards) to the east, with the idea that a much larger monument would eventually be constructed around it. The monument is crowned by an allegory of Liberty, the work of the French sculptor Joseph Dubourdieu. From the ground to the peak of the statue's Phrygian cap, the Pyramid measures 18.76 metres (61.5 feet).

The Casa Rosada (Spanish pronunciation: [ˈkasa roˈsaða], English: Pink House) is the office of the president of Argentina. The palatial mansion is known officially as Casa de Gobierno ("House of Government" or "Government House"). Normally, the president lives at the Quinta de Olivos, the official residence of the president of Argentina, which is located in Olivos, Greater Buenos Aires. The characteristic color of the Casa Rosada is baby pink, and is considered one of the most emblematic buildings in Buenos Aires. The building also houses a museum, which contains objects relating to former presidents of Argentina. It has been declared a National Historic Monument of Argentina.

The National Academy of History of the Argentine Republic (Spanish: Academia Nacional de la Historia de la República Argentina) is a non-profit learned society established to foster the study and dissemination of Argentine history.

The Headquarters of the Bank of the Argentine Nation (Spanish: Casa Central del Banco de la Nación Argentina), more often referred locally as Banco Nación Casa Central, is a monumental bank building next to the Plaza de Mayo, founding site of Buenos Aires and host of major events in the history of the country. Designed by renowned Argentine architect Alejandro Bustillo in a Neoclassical style with French influences, the 100,000 m2 (1,100,000 sq ft) building occupies an entire city block and was inaugurated in 1944. With a dome 50 m (160 ft) in diameter, the building is a National Historic Landmark.

Banco de la Nación Argentina (English: Bank of the Argentine Nation) is a national bank in Argentina, and the largest in the country's banking sector.

The Ministry of Economy (Spanish: Ministerio de Economía) of Argentina is the country's state treasury and a ministry of the national executive power that manages economic policy. The Ministry of Economy is one of the oldest ministries in the Argentine government, having existed continuously since the formation of the first Argentine executive in 1854, in the presidency of Justo José de Urquiza – albeit under the name of Ministry of the Treasury. The incumbent minister is Martín Guzmán, who has served since 10 December 2019 in the cabinet of Alberto Fernández.

The Federal Intelligence Agency (Spanish: Agencia Federal de Inteligencia) mostly known for its abbreviation AFI, is the principal intelligence agency of Argentina. This organization is the successor to the Secretariat of Intelligence (mostly known for its acronym "SIDE") and has two purposes: to collect national intelligence for governmental needs and criminal intelligence. It also was transferred from the Ministry of Security, to the National Criminal Intelligence. The agency was created by Law 27126 3 amending the National Intelligence Act entering into force 120 days after enactment of the Act. According to regulations shall govern all communication by the Director General or Deputy Director General any interaction being punished by the members of the AFI any action or relationship regulated by the law establishing the Federal Intelligence Agency. In turn AFI officials should make affidavits without distinction of degrees.