Plaza de Armas is a transfer station between the Line 3 and Line 5 of the Santiago Metro. It is located under the Plaza de Armas of Santiago. The Line 5 station was opened on 3 March 2000 as part of the extension of the line from Baquedano to Santa Ana. The Line 3 station was opened on 22 January 2019 as part of the inaugural section of the line, from Los Libertadores to Fernando Castillo Velasco.[2]
In January 2022, architects Loreto Lyon and Alejandro Beals, designers of the building over the station, were recognized as "Architects of the Year" by CityLab Santiago for their project.[3]
Nearby points of interest include the Metropolitan Cathedral of Santiago, Central Post Office Building, Palacio de la Real Audiencia de Santiago, Santo Domingo Church and the Casa Colorada.