I have to agree with silenus – the San Diego Zoo blew me away. I knew it was big when I visited in 1980, but I didn’t realize what they had:
A Clouded Leopard! I’d read about these in Frank Buck’s books, but I’d never even heard of a zoo having them
Koala Bears! Back then, it was unheard of for anyplace outside Australia to have them (We’ve since had the m even up here in Boston). They had special dispensation and a special breeding program for the little cuddly guys.
KOMODO DRAGONS!!! I’d read about them all my life. The Museum of Natural History in New York has a diorama of them (moved fro m the older, confining Hall of Reptiles to a big hexagonal tank in the newer Hall of Reptiles and Amphibians many years ago, and their peeling skins repaired), but I didn’t realize that any US zoo had LIVE ones.
Worst US Zoo – The Franklin Park Zoo in Boston, about 30 years ago. I rode there on my bike and started in at the northern entrance. Aside from the huge Aviary cage, I saw no animals – just a broad stretch of unbroken grass. I started walking through. There were buildings on the sides, but they were closed, and clearly had been for a long time. Even the one with carved elephant heads. Soon I saw a gate in the distance. “Aha!” I thought, “THAT must be the entrance to the zoo!” It was – it was the other entrance. I’d walked all the way through the zoo without seeing a single animal. I swear it’s true. (There were cages, but they were well off to the sides. I hadn’t seen them.) When I saw the movie Altered States andd saw the scene with the rhinoo, I had to laugh. Not only is there no rhino in a Boston Zoo, I don’t think they ever had one.
Of course, it’s much better today. About the time I returned to the city, they added the Tropical World exhibit, with its gorillas and other things. They added a Lion pen, and enclosures for zebras and giraffes, ostriches and antelope.
The other Boston Zoo, the Stone Zoo, was actually closed by the city so they could concentrate on the Frankllin Park Zoo, but viewer interest and donations kept the Stone Zoo going, and it’s now again a part of the Boston Zoo system, and has recovered fro m the Lean Years when it was almost empty.