Casa del Virrey Sobremonte, Colonial residence in Luján, Argentina.

Casa del Virrey Sobremonte, also called Casa de la Esquina, stands at Lezica y Torrezuri and Lavalle beside the Cabildo of Luján. Manuel Pinazo had it built in 1772 with single-story brick walls set in mud, a gabled roof of muslera tiles, barred windows and protruding panel doors. A balconied attic over the entrance archway breaks the prismatic volume, and the corner keeps its geminada door, two leaves at right angles separated by a hardwood post.

The house was built in 1772 by order of Manuel de Pinazo as a residence for a wealthy family. When British invasions threatened the region around 1806, Viceroy Sobremonte sought refuge within its walls, an event that later gave the building its name.

The house is also called Casa de la Esquina for its corner position, where a geminada door with two leaves set at a right angle and divided by a hardwood post recalls the shops of the period. From 1803 it served as a tobacco warehouse until 1812, and in 1894 it housed the press called La Justicia.

The house stands at the corner of Lezica y Torrezuri and Lavalle, next to the Cabildo and facing the plaza, so it is reached on foot from the centre of Luján. It forms part of the Complejo Museográfico Provincial "Enrique Udaondo"; the corner door with two leaves set at right angles, separated by a hardwood post, is the detail to look for before entering.

In 1889 buyers acquired the "Casa del Virrey" convinced that Sobremonte had buried his treasure there during his retreat to Córdoba; they found nothing. The belief came from a widespread theory that wealthy colonial houses hid valuables in floors or walls for fear of looting.