The pygmy hippo pool in Tropic World reminds me of the space for the same species in Omaha's Lied Jungle, although I think that Omaha's is slightly more realistic in terms of the terrain. Tropic World does have a regular rainfall, as some sort of sprinkler system opens up the heavens and pours down on the animals.
That's right Pat...haha! I was in the building when the rainstorm came pounding down and it is a spectacular sight for zoo visitors. All of the animals hid in nooks and crannies and waited until the rain stopped, and then afterwards the building was quiet once again.