The Greater Cleveland Aquarium, is an indoor public aquarium in Cleveland, Ohio. Occupying the historic FirstEnergy Powerhouse building located on the West Bank of the Cuyahoga River in the city's Flats district, the aquarium which opened in January of 2012 consists of approximately 70,000 square feet of exhibition space and features exhibits representing both local and exotic species of fish.
The facility represents the only free standing aquarium in the state of Ohio and ends a 26-year period that the city has been without a public aquarium. The now defunct Cleveland Aquarium in Gordon Park ceased operation in 1986. A ribbon-cutting ceremony was held for the aquarium January 19, 2012, with the aquarium opening to the general public on January 21.