One SeaGate  Fifth Third Center at One SeaGate is the tallest building in Toledo. 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. Costing $100 million, One SeaGate was built as the centerpiece of the SeaGate project in downtown Toledo. Groundbreaking took place in May 1979, and was officially dedicated in June 1982. The architects were Abramovitz, Harris & Kingsland. The building stands away from the Water Street riverfront. The tower is 411 feet (125 m) tall with 33 stories, with 29 floors of office space and two floors for maintenance. Each floor of the office tower has approximately , with of total leasable space. The building is made up of over 9,135 tons of steel, supported by 28 caissons, going down into the Earth, and over of concrete. The exterior of the building is covered in of glass, with 4,400 vision panels and 4,200 spandrel units between floors, representing Toledo's history as the "Glass City," and O-I's presence in the glass industry. A 294-seat auditorium is located in the tower complex with an executive parking garage immediately below it, and the building itself is connected to the CitiWalk system. Underground, there is a mini-mall, SeaGate Shops at CitiWalk, that was left primarily vacant after the departure of O-I. When the building opened, Edwin Dodd, then O-I's Chairman and CEO, exerted his considerable influence to fill the Promenade level shops with tenants. Damschroeder's and Ricardo's Restaurant were two large tenants who were convinced to move in. The mini-mall has a small eatery area that leads to Promenade Park and Fountain Square, which features the Dimitri Hadzi sculpture, Propylaea.