Yea, the New England Aquarium in Boston, MA has a giant circular tank in the center of the building. It's 24ft tall and probably 30ft across and they say it holds 200,000 gallons of sea water. They've got dozens of large sharks (bulls, nurse, etc), moray eels, baraccudas, sea turtles, and all kinds of other fish. They say they have over 650 animals in there. It's pretty awesome. An old friend of mine used to volunteer there as a diver to feed the animals and clean the glass windows. Now that would be cool to have in my living room!
