This is the Overture Center for the Arts in the heart of Madison's downtown. A Cesar Pelli designed building, this replaced the old Civic Center and, as you can see, the original facade was kept intact while the rest of the building was basically built around it. Overture changed the face of this part of downtown Madison - an entire city block was razed to make way for it.
I've only been to a couple of events here - for the most part tickets are not cheap and Overture is still fighting it's 'elitist' reputation. Despite being billed as a community arts center I think it's still out of reach for a good many people. On the bright side, there are some good free art galleries in there.