We, Montana! Great Room Location Here’s our address, with lots of directions below. 5055 Jellison RoadUnit 7 CBillings, MT 59101 Our Great Room is a modest warehouse space, practically remodeled to suit our needs. We have lots of different activities in the Great Room. Here it’s set in seminar style for a class, but we have shows and concerts and rehearsals here, too. Click image to go to Google Maps Click this image to go to Google Maps. See below to find the exact unit. We’re in Building 7, Unit C Here’s our front door and garage door. Here’s the sign that’s currently stuck to the garage door.