Managua that Managua will experience a severe earthquake every 50 years or less. Managua features four smaller crater lakes or lagoons within city limits. The most centrally located is the Tiscapa Lagoon in the Tiscapa Lagoon Natural Reserve. Managua, due to its tropical climate, varied topography, naturally fertile soils, and abundant rain and water sources, boasts a great variety of flora. Many different types of trees, some of which are not found elsewhere in the world, appear, including "chilamate"s, "ceibo"s, "pochote"s, "genízaro"s, "tigüilote"s, royal palms, "piñuela"s and "madroño"s (Nicaragua's national tree) surround the city. During the rainy season (May to November),
Managua the Augusto C. Sandino International Airport, the country's primary international gateway, and regional Los Brasiles airport and Punta Huete military air base, recently renewed. Managua is also home to all of the major banks of the nation, Banco de la Producción (BANPRO), Banco de América Central (BAC), Banco de Finanzas (BDF), Banco de Crédito Centroamericano (Bancentro) and its parent company the Lafise Group. Several new hotels including Crowne Plaza, Best Western, InterContinental, Holiday Inn, and Hilton currently have facilities in Managua. As well as many hotels, Managua has opened four western style shopping centers or malls, such as Plaza Inter,