Can the Washington Monument Fit Under the St. Louis Arch?

Yes, it can. The Washington Monument stands approximately 555 feet (169 meters) tall. The Gateway Arch in St. Louis rises to 630 feet (192 meters). With a clearance of about 75 feet, the entire monument would fit comfortably beneath the arch's apex.

This comparison highlights the Arch's staggering scale—it is the tallest man-made monument in the Western Hemisphere and the world's tallest arch.