If you are a regular watcher of Chicago Fire or Chicago P.D., then you are probably familiar with Molly’s Pub, the spot where the firefighters and cops in the shared Dick Wolf universe come to unwind. The set is modeled after the real Bucktown watering hole Lottie’s Pub; in fact, that’s where the bar scenes were shot during the first two seasons of Chicago Fire. But filming there proved too expensive, and so the entire bar was rebuilt on a Cinespace sound stage. We got a tour from Chicago Fire art director David Krummel and set decorator Desi Wolff.