Reps. Ed Wallace and Richard Fatig plant a tree on the Statehouse grounds in April 1960; Ohio Historical Society The people of Ohio will celebrate the sesquicentennial of the Ohio Statehouse throughout 2011. The Ohio Statehouse has served as the heart of Ohio democracy for the last 150 years. Throughout the state, the Ohio Statehouse stands as a symbol of the legislative and executive branches of state government, and the people of Ohio.