National Palace of Culture

The Palacio Nacional de la Cultura, also known colloquially as "Palacio Verde", is identified as Guatemala City's symbol in its architectural context. It was the most important building in Guatemala and was the headquarters of the president of Guatemala. The building is the origin of all the roads in the Republic and has a spot known as Kilometro Cero. It is presently a museum and is also used for important acts of the government.

Source: Wikipedia