Update: It's Saturday afternoon and someone's gotten it.
Anonymous 5:41 PM guessed correctly that it was a building within the Mississippi Valley Fairgrounds (before I gave that clue)
Anonymous 11:57 AM guessed correctly that its the Starlite Ballroom.
#1. It's in Davenport, but not in downtown. I'll give more clues later but at the moment it wouldn't be fair. (that was a secret clue)
#2. Its within the fairgrounds
It's Thursday, so here we go again.It looks like I've finally found a tough one.