we walked by and didn't try to enter. The building is architecturally interesting yet uninviting to the visitor.

First of all the building is something of a work of art. And the view of the surrounding area from the exhibit/public area is wonderful. They have a standing exhibit and temporary ones. Right now a Swedish painter photographer has a very interesting exhibit by Swedish artist Karen Broos. The center has lots of events and classes and it's free. Learn something about Sweden at the same time.