Gateway Convention Center is a 50,000+ square foot multi-purpose convention center centrally located in Collinsville, IL. Our flexible space can accommodate conventions, meetings, banquets, weddings, consumer shows, trade shows, and public shows. Gateway Convention Center is easily accessible from anywhere within the region as we are surrounded by five major interstates and located only 30 minutes from Lambert International Airport. Not only is our facility just 10 minutes from St. Louis city excitement, we are minutes from hundreds of southern Illinois attractions too.