Municipal Palace of Panama, Government building and monument in Casco Viejo, Panama.

The Municipal Palace of Panama is a neoclassical government building in Casco Viejo featuring a symmetrical facade with pilasters, arched windows, and ornamental cornices. The structure contains multiple levels with interior spaces designed for municipal operations.

The colonial Cabildo on this site was destroyed by the 1882 earthquake and later demolished by Law 93 of 1909. The present building was designed by Genaro Ruggieri and built by Florencio Harmodio Arosemena between 1907 and 1910, and inaugurated on 1 June 1910 with Juan B. Sosa presiding over the Municipal Council. It is named after Demetrio H. Brid, council president from 1890 to 1904.

The building is named after Demetrio H. Brid, president of the Municipal Council from 1890 to 1904 and a leader of the 1903 separation from Colombia. In the old Cabildo on this site, the open council declared independence from Spain on 28 November 1821. The council is considered the oldest governing institution on the American mainland, founded in 1510 at Santa María la Antigua del Darién and moved to Panama City in 1519.

The palace faces the Plaza de la Independencia, diagonal to the Metropolitan Cathedral and beside the Museo del Canal Interoceánico, on the site of the old Cabildo. The Museo de Historia de Panamá opened on the ground floor on 14 December 1977; the building was restored around 1975, when premises of the Academia Panameña de Historia and the Dirección Nacional de Patrimonio Histórico were fitted out.

The building stands on the plot of the colonial Casa del Cabildo, where the open council declared independence from Spain on 28 November 1821. That building was destroyed by the 1882 earthquake and later demolished under Law 93 of 1909. The Municipal Council itself, founded in 1510 at Santa María la Antigua del Darién and moved to Panama City in 1519, is the oldest governing institution on the American mainland.