who is watching whom?

The new Dubai Mall is finally open. We visited it last week and like everyone else were drawn to the huge aquarium, which has over 33,000 fish behind the largest single pane of glass and the largest aquarium in the world. Is there anything that is not "the largest" in this city? It's getting old now....we need to have something different besides crowing about the tallest tower, the largest mall, and so on.