Santo Domingo convent, Basilica and convent in Monserrat, Buenos Aires, Argentina

Santo Domingo is a convent and basilica in the Monserrat neighborhood of Buenos Aires, with a symmetrical pale tan stone facade flanked by two tall towers. The central triangular pediment sits above a round-arched window with ironwork and a small stone balcony, and a cross stands at the roofline. Three large arched doorways with dark metal gates open at street level. Inside, three naves have a barrel-vaulted central nave and a dome over the crossing; the church measures 70 meters long and 28.5 meters wide.

Dominican friars settled at this location in 1606 and construction of the present building began in 1751 under the direction of Turin architect Antonio Masella. The site later witnessed the British invasions and served as a location for military confrontations during colonial times.

The church keeps four British flags taken by Santiago de Liniers after the 1806 reconquest, displayed behind the altar of the east aisle. The wooden plugs set into the east tower mark where cannonballs struck it during the 1807 Battle of Santo Domingo. The image of Our Lady of the Rosary was crowned by papal decree in 1922.

The church stands on Avenida Belgrano in the Monserrat neighborhood, its atrium opening onto the street between the two towers. The main entrance is through the three barred arches of the narthex; two side doors, one beneath each tower, lead directly to the side aisles. Belgrano's mausoleum stands in the courtyard before the facade, and the British flags are kept behind the altar of the east aisle.

A mausoleum inside preserves the remains of Manuel Belgrano, who was buried wearing Dominican robes. Captured British military flags from the 1807 battles still hang inside the church as reminders of the defense of the city.