The project would sit unfinished for about twenty years. In 1932, construction resumed under Mexican architect Federico Mariscal. Mariscal completed the interior but updated it from Boari's plans to the more modern Art Deco style. The building was completely finished in 1934, and was inaugurated on 29 November of that year. The inaugural work presented in the theatre was "La Verdad Sospechosa" by Juan Ruiz de Alarcón in 1934. In 1946, the Instituto Nacional de Bellas Artes (National Institute of the Fine Arts) was created as a government agency to promote the arts and was initially housed at the Museo Nacional de Artes Plásticas, the Museo del Libro and other places. It is now at the Palacio.