The funds are already in place for a complete renovation of this polar bear exhibit. In the summer months this concrete bowl apparently reaches over 100 degrees Fahrenheit!
It was a nice hot day when I was there, one bear was cooling off while the other was actively exploring in the heat.
When viewed in summer 2019, this entire exhibit had been bulldozed and was a flat dirt lot awaiting construction of an entirely new polar bear complex. It will be interesting to see what the new exhibit looks like.