St. Louis Gateway Transportation Center
On the opposite side of the building from the Greyhound bus bays are the tracks for MetroLink, St. Louis' light-rail transit system. Color laminated films on 2-inch-thick insulated glass units from Alpen Energy Group-which are used throughout the project-play well against the interlocking zinc wall panels and add a bit of whimsy to the fa??ade. The insulated glass helps keep out noise from trains, buses, and the overpasses.