Santiago Town Hall, Town hall at Plaza de Armas, Chile.

Santiago Town Hall is the seat of the Municipalidad de Santiago, on the north side of Plaza de Armas at the corner of Monjitas street and Paseo 21 de Mayo, beside the former Palacio de la Real Audiencia. Its cream stone facade has a chamfered corner, round-arched ground-floor openings with dark grilles, rectangular upper windows with triangular pediments, and statues on the roofline above three flagpoles. The plan has two levels around a glazed hall.

The original structure was built in 1578 as a town council and colonial prison, and was later reconstructed by architect Joaquín Toesca between 1785 and 1790. This renovation transformed it into a neoclassical landmark reflecting late colonial administrative ambitions in South America.

The building still serves as the seat of the Municipality of Santiago, and its ground floor opens onto the Plaza de Armas beside the former Palacio de la Real Audiencia, now the Museo Histórico Nacional. The chamfered corner faces the junction of Monjitas Street and Paseo 21 de Mayo, where Metro Line 3 has a station.

Visiting the plaza in front of the building is free and available at any time, with the best views from the center of Plaza de Armas. Public transportation is readily accessible nearby, and the location sits in the heart of the city center making it easy to reach.

The 1895 building by Eugène Joannon replaced an earlier structure after the 1891 fire. Its plan has two levels around a glazed hall, and a vaulted basement occupies part of the lower level. The building was declared a Historical Monument in 1976.