Free fun!
Really central location; very easy to access. Right at the end of Crescent Street, so once you're done perusing the fine art, it's tempting to go have a beer at one of the many pubs down the street.
I was very impressed with the collections, and even more happy that picture-taking was allowed! (Actually, not completely sure whether it was actually permitted, but the security guys didn't stop us from snapping a few, so I'm assuming there are no rules about having a camera in there).