Casa Matriz del Banco Popular Argentino, Financial building in San Nicolas district, Buenos Aires, Argentina.

Casa Matriz del Banco Popular Argentino stands at the northeast corner of Florida and Teniente General Juan D. Perón, its corner crowned by a tower modelled on La Giralda of Seville. The Vilar brothers gave the base and upper section a Spanish Neo-Renaissance (Neo-Plateresque) ornament, with details taken from the Palacio de Monterrey in Salamanca, over a rationalist body. The base up to the first floor is clad in travertine, the inner courtyard lined with majolica tiles; the building has two basements, a ground floor and ten upper floors, stepping back from the sixth.

Construction began in 1926 and was completed in 1931 following an architectural competition held for the project. This period of building coincided with a time of economic growth and development of modern banking institutions in Argentina.

The ornamentation of the base and the crown follows the Spanish Neo-Renaissance (Neo-Plateresque) style, while the rest of the building is rationalist. Details of the upper section were taken from the Palacio de Monterrey in Salamanca, and the corner tower pays homage to La Giralda in Seville. The base up to the first floor is clad in travertine, and the inner courtyard is lined with azulejos.

The building is located in the San Nicolas neighborhood and is easily visible from the street, with its stone-clad facade providing a strong visual landmark. Access is generally limited to official banking matters, but visitors can appreciate the architectural features from outside the structure.

The tower on the corner is a homage to Seville's Giralda, while decorative details of the upper section were taken from the Palacio de Monterrey in Salamanca. The building also housed a rooftop confitería with a terrace and covered rooms over the tower body.