Guatemala City (in full, La Nueva Guatemala de la Asunción; locally known as Guatemala or Guate), is the capital and largest city of the Republic of Guatemala and Central America. It is also the capital city of the local Municipio de Guatemala, and Guatemala Department.

The city is located at 14°38′N 90°33′W, in a mountain valley called Valle de la Ermita in the south central part of the country Guatemala.
Reference: http://en.wikipedia.org/wiki/Guatemala_City%2C_Guatemala