Managua other Central American neighbouring countries to show off their horses, skills, and horserider costumes. Another festival taking place since 2003 is the "Alegria por la Vida" (Happiness for Life) Carnaval is celebrated in Managua at the beginning of the month of March. There's a different slogan or theme every year. This event is celebrated with parades, floats, live music, food and dancing as well as the march of the Carnival Queen. The National Library holds a great amount of volumes and affords abundant bibliographic information about the discovery and independence of Nicaragua. The National Palace of Culture has an exhibition
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