BrewHop STL Tour - Schlafly, Side Project, Heavy Riff, and Rockwell The adventure begins at the renowned O'Fallon Brewery, located at 45 Progress Pkwy, Maryland Heights, MO 63043, United States. At noon, we'll gather at this iconic venue before setting off to explore Six Mile Bridge, Steampunk, and MKNZ Brewing. Each stop along the way will treat you to a full pour of your choice - that's right, four full pours to satisfy your beer cravings.