I found this one of the most unusual viewing spaces for tigers of the places I have visited...from the elevated walkway which feels like an adventure playground with the drop offs either side (think this photo was taken from there?) to the walkway around the platform where you can get very close up indeed (as you can see behind him) plus ground viewing. All round different perspectives.
Somewhere like Whipsnade uses the natural layout to create different viewing points at elevation etc, but this is a very interesting structure on flatter terrain.
Is this the only enclosure in the UK where you can walk across the top of the tiger area?