Answer: aquarium

AnswerCrossword Clue
AQUARIUMFish tank
AQUARIUMVanished landmark of Battery Park, N. Y. C.
AQUARIUMZoo's counterpart
AQUARIUMSchool house?
AQUARIUMFish habitat
aquariumA transparent tank of water in which fish and other water creatures and plants are kept
aquariumA building containing such tanks, esp. one that is open to the public
aquariuma water filled museum for all forms of aquatic life