The Greater Cleveland Aquarium is an aquarium in Cleveland, Ohio, USA. 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 2012 consists of approximately 70,000 square feet (6,500 m) of exhibition space and features exhibits representing both local and exotic species of fish.[1] The facility is 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.[2]