The OneAmerica Tower is a 38-story building at 200 North Illinois Street in downtown Indianapolis, Indiana. It is used by various companies for offices. The building opened in 1982 and is faced with Indiana limestone. From 1982 to 1990, the OneAmerica Tower was the tallest building in the state of Indiana. On the 36th floor there is a private restaurant named "The Skyline Club". The OneAmerica Tower is the 2nd tallest building in Indianapolis, behind Salesforce Tower.