Managua old center of the capital that remains rather unchanged since the 1972 earthquake. The monorail would serve important locales, such as the Augusto C. Sandino International Airport and continue service to Ciudad Sandino. The project costs $100 million and has been considered as a possibility for the nation's capital. The Augusto C. Sandino International Airport (formerly Managua International Airport) is the largest and only international airport in Nicaragua. It recently inaugurated its over US$52 million extension and renovation partly financed by Spain. The airport was remodeled by architect Roberto Sansón and has now been converted into one of the region's
Managua 1927. A new sewer system and the redirecting of waste water to a new waste water treatment plant at Las Mercedes funded by the German government to decontaminate the lake is expected to be the largest in Central America and was inaugurated in 2009. Managua's city area extends about , essentially south from the south shore of Lake Managua. The lakeshore is at an altitude of above sea level, and the city climbs as it gets towards the Sierras de Managua further south where it is over above sea level. Geologically, the city lies on fault lines, thus seismologists predict