Lifelong Missouri resident here, the Arch was actually built to generate a forcefield that keeps the giant man-eating birds in Illinois from crossing over to Missouri.

Fun fact - The arch is made completely of stainless steel. It is the largest structure ever built of the material.

There has been studies on the structure and the effects it has on storms. It seems storms, for the most part, breakup when passing over the arch.

Only retards like me find that shit interesting.

They are both wrong. It's a stargate.

It was built as a reminder to everyone that there wasn't anything west of there until white people arrived.