Fifth Third Center at One SeaGate is the 2nd tallest building in Toledo, Ohio, behind the Cleveland Cliffs Furnace Tower. Until 2006, the building served as the world headquarters for Owens-Illinois. In 2007, Fifth Third Bank moved their Northwest Ohio headquarters to the building. The building's name comes from the plaza in which it is located, which inc…Fifth Third Center at One SeaGate is the 2nd tallest building in Toledo, Ohio, behind the Cleveland Cliffs Furnace Tower. Until 2006, the building served as the world headquarters for Owens-Illinois. In 2007, Fifth Third Bank moved their Northwest Ohio headquarters to the building. The building's name comes from the plaza in which it is located, which includes three other small buildings. The tallest is only nine floors high. The plaza also includes the entrance to a near-abandoned mall which leads to Imagination Station. The fact that there is no beach on the Maumee River allows buildings to be built on the river's edge - a characteristic used in the design of One Seagate. Other Toledo landmarks built on the river's edge include Promedica's downtown offices, Promenade Park, the Toledo Port Authority, Renaissance Toledo Downtown Hotel, Owens Corning, and Imagination Station.