When: March 7-May 29, 10 a.m.-5 p.m.; May 30-Sept. 5, 9 a.m.-8 p.m., $4-$7, http://www.gatewayarch.org. St. Louis Gateway Arch, Jefferson National Expansion Memorial, (11 N 4th St), St. Louis, 314-655-1701, http://www.nps.gov/jeff.
In this award-winning documentary, you can see how the Arch was built! And get an up-close look at construction workers! The Arch was completed on Oct. 28, 1965 -- that day will live on in history and in this 35-minute film shown hourly.