ALERT: Visitors must enter the monument through the new west entrance, which faces Fourth Street and the Old Courthouse. The Gateway Arch legs have become exits only. Tram tickets will sell out early and often - advance tickets are strongly recommended. Please allow at least 30 minutes to go through security. Standing 630 feet tall, the Gateway Arch, our nation's tallest man-made monument, anchors Gateway Arch National Park (formerly Jefferson National Expansion Memorial) and stands as the iconic monument symbolizing the westward expansion of the United States. Get your tickets online, by phone, or in person at the Gateway Arch ticket center located inside of the new west entrance. The Gateway Arch experience includes the Tram Ride to the Top of the Gateway Arch, the all new Museum at the Gateway Arch, Monument to the Dream documentary movie, shopping at the Arch Store, the Arch Cafe and cruises aboard the Riverboats at the Gateway Arch.