From "Indoor jungles" that I have personally been to, I am still debating between Brookfield Zoo's Tropic World and Minnesota Zoo's indoor jungle, on my last visit to Minnesota Zoo there were Nilgiri tahrs in their indoor jungle exhibit and those are a species pretty much gone from captivity so it was super cool to see those, but the thing is that they are no longer there, and for that reason I voted for Brookfield Zoo and plus Brookfield Zoo's Tropic World seems to have more of a variety of mammals if I remember correctly and mammals are my favorite class of animals. Unfortunately I have not been to Omaha or Bronx but Jungle World and Lied Jungle seem to be super awesome so I want to go to those zoos and check them out so I can see what a lot of you guys meant when voting for those, what I miss about Jungle World is that Proboscis monkeys lived there back in the day. It would be nice to visit both so I can compare the too. Besides Jungle World, another place that you could consider an "Indoor Jungle" is the World of Birds Building at the Bronx Zoo, also the closest thing to an "Indoor jungle" near my house would be the tropical aviaries at Santa Ana Zoo, Los Angeles Zoo, and the ZSSD parks, Aviaries are not technically indoors but they have netting over them
Anyways, this is an awesome poll thread idea !!!