Enclosure is a bit too small, especially considering it houses four pumas together. For a brand new exhibit that just opened around two years ago, this is inexcusable.
But it does have a somewhat unique and creative design. The left side is viewed from outside the exhibit (and as this shows, a mesh divider in the middle can cause the cats to be locked in one side or the other if necessary). The right side is viewed from inside the cabin through glass windows. What is unique is that the ground level for the cats is actually right at visitor's eye level. Gives a unique perspective, although it would be terrible if you are really short or in a wheelchair. Here is a photo I took from the inside windows:
I thought so too, and indeed four cats are a bit of an overload in not a larger space, but the experience of seeing a puma just over your head (see another photo that I took) almost made me forget about that. Too bad that I didn't see the Canadian Lynx though.