Skanes Animal Park in Sweden, July 2009.
Bear enclosure no 2 is much better than no 1 (see pictures from this). However, I believe that no 2 is the regular enclosure and that no 1 is only used for a mother with cubs.
No 2 is in no way sensational by modern standards, but still an OK exhibit. I would estimate the size to something like 1500+ square meters (slightly less than one half of on acre). Its main disadvantage, just like enclosure no 1, is that the visitors have access to almost all sides of it. Being much bigger though, this is less of a problem.