Browse Items (1 total) Tags: Decatur Municipal Theatre Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Photo of Decatur Municipal Theatre. Photograph of the Decatur Municipal Theatre located on Rt. 51 South left by the waterworks. Tags: BS507, BS507A, Business, Decatur IL., Decatur Municipal Theatre, Decatur Waterworks, Outdoor Theatre, Rt 51 South, Seitz Studio, Theaters, Theatres