I can think of one US zoo that is perhaps most deserving of a mention in this thread, and it's Disney's Animal Kingdom. In many ways, the storylines to Disney's Animal Kingdom and the attention to detail are impressive and phenomenal. For example, having real baobab trees on Kilimanjaro Safaris brings a level of realism and naturalism that is unparalleled by other zoos:
Photo By:
@Ituri
The Mahajarah Jungle Trek takes on a storyline of an abandoned city that was reclaimed by nature, and this theming is present throughout the attraction- but fits with the overall messages of the park and in many ways enhances the exhibits, rather than detracts from them. This is most evident in the main aviary in this section:
Photo By:
@geomorph
Photo By:
@geomorph
Photo By:
@Mr.Weasel
While some of the theming in this aviary (and other parts of the trail) are certainly excessive, most of it is either neutral to the animals (e.g., paintings on the walls), or disguising welfare-positive attributes (e.g., water bowls) as thematic objects.
That said, there are also places within Disney's Animal Kingdom where the theming is less successful. For example, in order to maintain a more authentic safari experience, most of the animals on Kilimanjaro Safaris can only be seen from the safari vehicles, which often means long lines and thirty-second views. In these cases, the visitor experience is actually detracted from by the theming, as it means one isn't able to visit individual exhibits for either more and/or less time than the safari vehicle does. Yes- the safari is an impressive ride. However, it's a shame that visitors can't experience one of the best elephant complexes in the world for longer than 30 seconds at a time.
Photo By:
@J I N X
Furthermore, in some cases I feel as though Disney's Animal Kingdom avoided placing the same quality of educational signage that I'd expect at an AZA-accredited institution due to the theming as well. If an institution is dedicated to education, then any theming which exists should enhance this part of the zoo's mission, not be a hindrance to it. While some sections of the zoo have signage (photos from The Oasis), many exhibits along the more thematic trails do not, which is a real shame.
Photos By:
@Mr.Weasel
Lastly, a few exhibits are arguably detracted from by the theming. While Disney created exhibits for gorillas, hippos, and elephants that are easily amongst the five best in the United States (if not the world), the same impressiveness is not present in their big cat exhibits. While the tiger exhibit isn't bad, it opts to be anchored by a large fountain, and doesn't feature nearly as many natural, enriching elements as the other exhibits in the park do. While not a bad exhibit per say, it certainly isn't even in the country's top ten!
Photo By:
@Mr.Weasel
The area surrounding the exhibit is even more immersive in its theming:
Photo By:
@Mr.Weasel
The lion exhibit on Kilimanjaro Safaris suffers similarly- while not a bad exhibit, it focuses more on trying to replicate "pride rock" from The Lion King than on building a jaw-dropping habitat.
Photo By:
@ZooNerd1234
Disney's Animal Kingdom had a much larger budget than most other zoos- allowing it the luxury of pursuing more over-the-top theming without detracting from animal welfare. If even Disney can at times falter due to over-theming, it concerns me when zoos of a lesser budget try to prioritize designing a "disney-fied" style of exhibitry over providing impressive, naturalistic habitats at a lower cost.