In the United States perhaps the two best leopard exhibits are to be found at Utah's Hogle Zoo (Asian Highlands) and Minnesota Zoo (Russia's Grizzly Coast).
I am surprised that several people call it the best leopard exhibit they have seen, solely based on photos.
I was quite unimpressed by seeing it in real live last month. This picture makes it appear much larger than it actually is and the amount of climbing opportunities is actually really low for a leopard...