San Martín de Porres (SMP) is a district in Lima, Peru, located in the north area of the city. It is bordered by the Chillón River, marks its natural border with Ventanilla and Puente Piedra on the north; Callao on the west; Los Olivos, Comas (disputed areas) on the northeast; Rímac and Independencia districts on the east; The Rímac River marks its natural border with Lima District and Carmen de la Legua Reynoso on the south. From Wikipedia
