Dublin's old Polar Bear enclosure (originally built for Lions) in c.1999.

Is it still standing?

No, it's not still standing. The Polar Bear was unhappy and was brought to another Zoo.

It was still standing about four years ago when I last visited. It had been caged over and was due to be used as a new gorilla facility. But the change in directorship at Dublin turned those plans around and I don't know what has since happened.