Theatre in the Square was founded in 1982 by Michael Horne and Palmer Wells. Originally located in the former banquet hall of the old Marietta Depot restaurant, with a seating capacity of 85 and the first professional theatre in Cobb County, it later moved in 1985 to a larger space off the historic Marietta Square in downtown Marietta, Georgia. It was a non-profit organization governed by a volunteer Board of Directors made up of civic leaders from around the Atlanta metropolitan area. It was a full production professional theatre presenting year-round theatrical productions on two stages, the main 225-seat stage and the 125-seat Alley Stage, and presented about 445 performances yearly, including Broadway and Off-Broadway-type productions, award winning plays, original works, modern classics, musicals, as well as children's productions, a show in celebration of Black History Month, a playreading series, and holiday musicals. The theatre also offered a variety of educational and outreach programming, including shows for students in grades K-12 and college, and acting classes for children, teenagers, adults, and senior citizens.