Theaters Teatro degli Industri The Teatro degli Industri is the main theater in Grosseto. The first show was built in 1819 by the Academy of Industri. The room had the capacity to accommodate more than 500 people. Later, between 1888 and 1892 the theater was renovated and expanded by the Sienese architect Agusto Corbi. Thus, a horseshoe room was built, for a capacity of 800 spectators, with 56 stages.