Teatro Municipal de Antofagasta, Municipal theatre in Antofagasta, Chile

The Teatro Municipal de Antofagasta stands at the northeast corner of Plaza Colón, built of reinforced concrete as two rectangular blocks joined by a linear, semi-concave central volume. L-shaped perimeter balconies run along part of the building, and glazed openings let passersby see inside. The main hall seats 867: 560 in the lower stalls and 307 in the upper tier.

Construction began in 1966, but financial difficulties delayed the project significantly. The building finally opened to the public in September 1981 after more than a decade of work.

The theatre has housed the Orquesta Sinfónica de Antofagasta since its founding on 2 November 1962 by Rafael Ramos, now conducted by Christian Baeza. It has hosted film festivals, concerts and art exhibitions, and in 2013 drew a record of more than 70,000 visitors to 150 events. Since 1976 the Isaac Arce Ramírez public library has occupied the San Martín street side.

The theatre stands at the north-east corner of Plaza Colón, with the Isaac Arce Ramírez public library (No. 120) on its San Martín street side. The main hall has 867 seats: 560 in the lower platea and 307 in the upper one. An elevator for people with disabilities was installed in recent renovations.

The upper part of the building carries a mural by regional artist Luis Núñez San Martín and a four-person team, including a Colombian plastic artist living in Chile. Covering over 1,200 square metres, it took five months and was inaugurated on the night of 24 April 2014 with the Orquesta Sinfónica de Antofagasta. It depicts the indigenous faces of the region and the rise and fall of saltpetre in Antofagasta's history.