The large, renovated ballroom upstairs at Sons of Hermann Hall is the perfect venue for swing-dance nights, which it hosts every Wednesday. There's a refinished hardwood floor, smooth enough for twirling without friction but with enough traction that you can stay on your feet. There are tables and chairs for those who need to take a breather, and a bar for those who need some liquid incentive to strut their stuff. With the air conditioner cranked and music blaring from the sound booth or from the bandstand, it's easy to feel as if you've stepped back in time, since Sons was around decades before swing was popular the first time.