The Theatro Municipal in Sao Paulo (in the centre of this picture from the Life Magazine archive), the site of one of Villa-Lobos's great triumphs: the Semana de Arte Moderna in February 1922. I'm guessing that this picture is from the 1930s. [the picture is © Time Inc.)
The Theatre was inaugurated in 1911, so we can look forward to Centennial celebrations next year.