US

Here's what it's like inside St. Louis' Gateway Arch -- the tallest man-made monument in the US

We took a trip to St. Louis’ Gateway Arch — the tallest man-made monument in the US. The arch is 630 feet high and its foundations are about 60 feet deep. It’s made of 142 stainless steel sections, concrete, and structural steel.

The monument honours Thomas Jefferson’s Louisiana Purchase and St. Louis’ role in westward expansion of the US.

It’s often called “the gateway to the west”.

From 1947-1948, city officials held a design competition for the monument. Eero Saarinen’s arch design won and construction began on Feb. 12, 1963. The arch was completed on Oct. 28, 1965

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