Recently I've been thinking about elephant houses, more specifically the lack of great ones. Many zoos have invested in elephant exhibits in recent years, but the indoor housing always feels like they leave much to be desired. Off the top of my head, Zurich's elephant house seems pretty great, but otherwise I really can't think of an elephant house that has really reinvented the wheel. Are there any others that really stand out?
Zurich's Elephant House:

Zurich's Elephant House: