Edificio de la Cámara de Diputados de Santiago del Estero, Provincial legislature building in Santiago del Estero, Argentina.

The Edificio de la Cámara de Diputados de Santiago del Estero consists of a five-level main block with a glazed oval framed by a solid portico, plus an L-shaped two-level wing clad in alucobond and glass for deputies' offices. The former elevated metal water tank stands in the center as a civic exhibition plaza and multipurpose hall, reached by exterior panoramic elevators. A first-floor walkway passes beneath the tank, linking both sectors.

The Legislature of Santiago del Estero was created in February 1826 under Juan Felipe Ibarra, with its Sala de Representantes meeting in his house at Avellaneda and 25 de Mayo. In 1868 it moved to the building now occupied by the Centro Cultural del Bicentenario, and in 1928 to the upper floor of the Teatro 25 de Mayo. Gerardo Zamora announced a dedicated seat on 27 April 2011; Claudia Ledesma Abdala de Zamora inaugurated it on 8 April 2014.

The old elevated metal water tank of the former Obras Sanitarias de la Nación, kept on the irregular hammer-shaped plot, was turned into a multi-purpose hall for public use. It stands as a civic exhibition plaza at the centre of the complex, crossed by a first-floor walkway that passes beneath it.

The building is located at the corner of Avenida Roca and Patagonia with clearly visible entrances on its main facade. Keep in mind this is an active government building, so access may depend on official activities or scheduled visits.

The exterior features two unifying porticos that structure the different volume levels, creating a distinctive architectural solution that organizes the complex forms. These design elements give the building a recognizable presence within the urban landscape.