Managua waste water to a new water treatment plant at Las Mercedes in Eastern Managua in May 2009 relieved old concerns over water pollution and native wildlife, and brought some residents closer to the old city center and the rest of the mainland. Managua is located on the southern shores of Lake Xolotlán, also known as Lake Managua. Lake Xolotlán contains the same fish species as larger Lake Cocibolca in southeastern Nicaragua, except for the freshwater sharks found exclusively in the latter. Once a Managuan scenic highlight, the lake has been polluted from the dumping of chemical and waste water since
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,