What began as a feminist theater collective of Philadelphia artists in 1973 has since grown into one of the Avenue of the Arts' many shining jewels. Since the opening of The Wilma Theater in 1996, the innovative productions of its founding co-artistic directors, Blanka Zizka and the late Jiri Zizka, have become nationally renowned. Opera Philadelphia presented the World Premiere of 10 Days in a Madhouse at the Wilma Theater in September 2023.