Callao in the context of "Lima"

The departments (Spanish: departamentos), informally called regions (Spanish: regiones), are the first-level administrative subdivisions of Peru. According to the Organic Law of Regional Governments, each department is administered by a regional government and a legislature responsible for administration, economic planning, and public services. These governments operate with autonomy while still coordinating with national authorities. Each department is led by a regional governor, who is elected by popular vote for a four-year term, and is responsible for implementing regional policies, managing budgets, and overseeing infrastructure projects. The governor is supported by a regional legislative council, composed of elected representatives from different provinces within the department. This council approves budgets, monitors public investments, and ensures government accountability.

There are 24 departments in total, as well as two provinces that operate under a special regime: Callao and Lima. The former does not belong to any department since 1836, but is nevertheless administered by a regional government of its own. The latter is administered by the Metropolitan Municipality of Lima, which is equal in status to a regional government.

The Rímac River [ˈri.mak] is located in western Peru and is the most important source of potable water for the Lima and Callao Metropolitan Area. It belongs to the Pacific Slope, into which it flows after bathing the cities of Lima and Callao, together with the Chillón River, to the north, and the Lurín River, to the south. It is 204 km long and has a basin of 3,312 km², of which 2,237.2 km² is a humid basin. The basin has a total of 191 lagoons, of which only 89 have been studied. The river begins in the highlands of the Huarochirí Province in the Lima Region and its mouth is located in Callao, near Jorge Chávez International Airport.

The river runs through the Rímac Valley (Spanish: Valle del Rímac), one of three valleys in the city of Lima. The city of Lima is located on the delta-shaped valley, as are various towns such as Matucana, Ricardo Palma, Chosica, Chaclacayo and Vitarte, small cities that function as strategic points between the coast and central mountains of Peru. It has a total surface of 3,700 km.

Jorge Chávez International Airport (IATA: LIM, ICAO: SPJC, SPIM) is the main international airport serving Lima, the capital of Peru. It is located in Callao, 11 kilometers (6.8 mi) northwest of the Historic Centre of Lima, the nation's capital city, and 17 kilometers (11 mi) from the district of Miraflores. In 2023, the airport served 22,876,785 passengers. Historically, the airport was the hub for Compañía de Aviación Faucett, which was the second oldest airline in the Americas, and Aeroperú, which served as Peru's flag carrier. Now it serves as a hub for many aviation companies. The airport was named after Peruvian aviator Jorge Chávez (1887–1910). It is among the busiest and largest airports in South America, providing international flights to North America, South America, Central America, the Caribbean and Europe, along with domestic flights in Peru.

In 2022, it entered the list of the 50 most important air hubs worldwide, occupying position number 47 after having been in position 58 in 2019 according to the international air statistics consultancy OAG. It is owned by the German transport company Fraport and operated by Lima Airport Partners.

The Lima Metropolitan Area (Spanish: Área Metropolitana de Lima, also known as Lima Metropolitana) is an area formed by the conurbation of the Peruvian provinces of Lima (the nation's capital) and Callao. It is the largest of the metropolitan areas of Peru, the seventh largest in the Americas, the fourth largest in Latin America, and among the thirty largest in the world. The conurbation process started to be evident in the 1980s.

The metropolitan area is composed of five subregions. These are Lima Norte, Lima Sur, Lima Este, Central Lima, and Callao. Its estimated 2020 population is over 11 million according to the INEI.

Callao is a district of Callao, Peru. Its creation dates back to 1836, and its territory currently includes Jorge Chávez International Airport and the Port of Callao, the country's main seaport. Consequently, Callao is the largest port of entry to Peru.

The regional Governments (Spanish: gobiernos regionales) of the government of Peru administer each of the country's 24 departments, as well as the Constitutional Province of Callao and the Province of Metropolitan Lima. It has political, economic, and administrative autonomy in the subjects of its matter. The Constitution of Peru first mandated the establishment of regional governments in 1979.