Bars for tigers, July 2013.

Almost unnoticeable. The only other time I remember a set-up like this is on the Pangani Forest Trail at Disney\'s Animal Kingdom.
Photo taken on one of my visits on either the 14th or 21st July 2013. (See EXIF data for a more accurate date & time)

I remember Rotterdam Zoo having a similar viewing situation in their Sumatran tiger exhibit.

Dallas Zoo (USA) - 1999 (one year after Animal Kingdom)

I was going to say Dallas Zoo also. Really clever design.

Very nicely done - I appreciated that it was much more subtle than the other example I'd seen. I think it was previously a bit of a screen in front of Disney's gorillas where a window might have fitted (but I visited in 2001 so it's a very vague memory). Here, during the day I didn't think to look through the bars, and only at night with the lit backdrop did I see that this was a clever barrier.

Edinburgh also has this arrangement in the smaller Sumatran tiger enclosure.

kiang said:

Edinburgh also has this arrangement in the smaller Sumatran tiger enclosure.

Click to expand...

I was about to say that too - very interesting, not seen a lot but when it is seems to be effective.