Basilica of Sainte-Anne-du-Congo in Brazzaville

French Equatorial Africa (French: Afrique-Équatoriale française), or the AEF, was the federation of French colonial possessions in Equatorial Africa, extending northwards from the Congo River into the Sahel, and comprising what are today the countries of Chad, the Central African Republic, the Republic of the Congo, and Gabon.

The People's Republic of the Congo (French: République populaire du Congo) was a Marxist–Leninist socialist state that existed in the Republic of the Congo from 1969 to 1992. The People's Republic of the Congo was founded in December 1969 as the first Marxist-Leninist state in Africa three months after the government of Alphonse Massamba-Débat was overthrown in the September 1968 coup d'état. The ruling Congolese Party of Labour (French: Parti congolais du travail, PCT) appointed Marien Ngouabi as president who established the Congo as a one-party communist government aligned with the Soviet Union. Ngouabi was assassinated in 1977 and succeeded by Joachim Yhombi-Opango until he was overthrown in 1979. Denis Sassou Nguesso succeeded Yhombi-Opango, confirmed the PCT's rule in the Congo with a new constitution, formed closer relations with France, and allowed greater foreign investment in the country. The People's Republic of the Congo transitioned into a capitalist multi-party democracy following the dissolution of the Soviet Union in 1991, restoring the country's earlier name and flag, and ceased to exist by March 1992. André Milongo was appointed as transitional prime minister while Sassou remained as president.

Equatorial Congo Airlines SA, operating as ECAir, was an airline headquartered in Brazzaville; it was the flag carrier of the Republic of the Congo. The airline suspended all operations on 10 October 2016.

The Nabemba Tower, also known as Elf Tower, is a high-rise office block in Brazzaville, Republic of the Congo, located directly on the Congo River in the south of the city. At 106 metres and 30 floors it is the tallest building in the Republic of the Congo. It is named after Mont Nabemba, the highest mountain in the country. The tower was built with borrowed funds from the French oil company Elf Aquitaine.The tower was designed by Jean Marie Legrand during the government's five-year plan and was built between 1983 and 1986. Various ministries and charities' offices are housed in the tower, such as the African Self-help Development Initiative, the New Partnership for African Development, and UNESCO. Nabemba Tower was inaugurated by President Denis Sassou Nguesso on 3 February 1990.

The Brazzaville–Kinshasa Bridge is a proposed road-rail bridge construction project over the Congo River that will connect the Republic of the Congo to the Democratic Republic of the Congo at their respective capitals, Brazzaville and Kinshasa. The project has proceeded intermittently, but work is slated to begin in 2023 and be completed in 2028.

The Sacred Heart Cathedral (French: Cathédrale du Sacré-Cœur de Brazzaville) or simply Cathedral of Brazzaville, is a religious building belonging to the Catholic Church and is located in the city of Brazzaville in the African country of the Republic of Congo.The church is the seat of the Bishop of the Archdiocese of Brazzaville and is the oldest existing cathedral in central Africa. The building was built in 1892 and consecrated in 1894. The space was renovated in 1952 and 1993. The main entrance faces east and is decorated with two large polychrome statues of St. Paul and St. Peter, dating from before 1914. Charles de Gaulle visited it in 1944 and Pope John Paul II did the same in 1980.

The Roman Catholic Archdiocese of Brazzaville (Latin: Archidioecesis Brazzapolitana) is the Metropolitan See for the Ecclesiastical province of Brazzaville in the Republic of the Congo.

Brazzaville (French pronunciation: ​[bʁazavil], Kongo: Balazavile, Ntambo, Mavula; Teke: M'fa, Mfaa, Mfa, Mfoa) is the capital and largest city of the Republic of the Congo (Congo Republic). Constituting the financial and administrative centre of the country, it is located on the north side of the Congo River, opposite Kinshasa, the capital city of the Democratic Republic of the Congo (DR Congo). The population of the capital is estimated to exceed 1.8 million residents, comprising more than a third of the national populace. Some 40% are employed in non-agricultural professions. During World War II, Brazzaville was also the capital of Free France between 1940 and 1942. In 2013, Brazzaville was designated a City of Music by UNESCO; since then it has also been a member of the Creative Cities Network.

Ile Mbamou is the only district of the Brazzaville Department of Republic of the Congo.

On 21 November 2023, a crowd crush in Brazzaville, the capital of the Republic of the Congo, occurred on the final day of a military recruitment drive in the Michel d'Ornano Stadium, causing at least 32 deaths and 144 injuries.

On 30 November 2012, an Ilyushin Il-76 freighter aircraft, operated by the Armenian cargo airline Air Highnesses on behalf of Congolese cargo airline Aéro-Service, crashed on landing at Brazzaville, Republic of the Congo, killing all six occupants and 26 people on the ground.The aircraft was on a domestic flight from Pointe Noire Airport to Maya-Maya Airport and was attempting to land on runway 5L in heavy rain when it clipped high trees about 1,000 metres (3,300 ft; 1,100 yd) from the runway threshold, disintegrating over 500 metres (1,600 ft; 550 yd). The aircraft caught fire and was destroyed, killing all five Armenian crew and an Armenian policeman present on board, as well as 26 local residents, injuring a further 14. The aircraft was initially mistakenly attributed to Trans Air Congo.

On 4 March 2012, a series of blasts occurred at an army arms dump in Brazzaville, the capital of the Republic of the Congo. At least 300 people were killed by the explosions. Additional bodies were said to be "unfindable." Among the dead were six Chinese workers from a Beijing Construction Engineering Group work site close to the armoury. Interior Minister Raymond Mboulou said that nearby hospitals were overflowing with injuries, with many wounded lying in hallways due to lack of space. Total injuries exceeded 2,500. More than 121,000 people were left homeless and 672 million dollars in damages were done. One survivor described the event as feeling like "the apocalypse;" others described it as "like a tsunami" or "earthquake".