For a restaurant bar that has been through everything you think we'd already know it all.

However, when the Der Rathskeller shared a picture of their very first liquor license on Facebook, there was an interesting story that went along with it.

3rd Rockford Liquor License Issued After Prohibition Belongs To Der Rathskeller Restaurant. Founder Fred Goetz No Longer Had To Hide Booze Behind A Secret Wall In Cellar. (Which still exists today.)

Wait, what? We know Rockford's oldest restaurant, Der Rathskeller, was around during the Prohibition Era but we had no idea they used to hide booze in the walls.

What other mysterious things have been going on at Der Rathskeller that the people of Rockford don't know?

Sweet Lenny is the brand manager of 97ZOK, Q98.5, and Operations Manager for Townsquare Media Rockford. Catch him afternoons 3 to 7 on 97ZOK. Follow him on Twitter, Instagram and like his page on Facebook.