This is one of the best aviaries that I've ever seen, and the only one that I would perhaps place above it is the Wings of Asia aviary at Miami Metrozoo. Omaha's Henry Doorly Zoo has a massive aviary that is 4 acres in size, but it was looking a tad rundown when I visited that zoo last summer. Also, the San Diego Zoo is packed full with outstanding aviaries, and the Owens and Scripps pair are two beauties!
The original domed part (you can see it in other photos) was built for an eagle aviary and this part was added later on when it was turned into a walk-through aviary.
