sentences:  On 21 April 1935, celebrations marking the 20th anniversary of the Theatre Circo was inaugurated.Similar festivities were celebrated on 21 April 1940, marking the silver anniversary of the institution, that include performances by tenor Ascenso de Siqueira Freire.Between 1943 and 1950, the prosperity of the theatre reached its peak, and were then followed by a period of remodelling in order to beautify the structure.