St. Louis Arch
St. Louis, Missouri
Why is this topic important?
Who? What? When? Where? Why? How?
What? A tall monument called the St. Louis Arch aka "Gateway Arch"
When? Construction began in February 1963 and was completed in October 1965.
Where? St. Louis, Missouri
Why? Monument was placed in that location because St. Louis played a key role in westward expansion
How? The primary construction materials used to build the Gateway Arch were steel and concrete. The outside skin consists of ¼-inch stainless steel. There is also an inner layer of 3/8-inch structural steel with a layer of concrete between the layers of steel. With foundations sunk 60 feet into the ground, its frame of stressed stainless steel is built to withstand both earthquakes and high winds. 630 feet tall x 630 feet wide
― Tracy Campbell, The Gateway Arch: A biography
(That quotation means the arch isn't just a symbol of western expansion it's a symbol of United States dominance)