The Wacky OKARMO Corner: Where Three States Collide

The Arkansas-Missou-OK-A-Dot, or OKARMO Corner, as it's fondly known, is a quirky concrete leg near Southwest City, Missouri. Sitting smack-bang on the intersection of Missouri Route 43, Arkansas Highway 43, and Oklahoma State Highway 20, it's about a grand above the sea level. This kooky keystone was put up by the Ozark Culture Club back in '15, not the ones folks thought at first. It took a while, but this bad-boy was first surveyed in the early 19th century, just after the Missouri Compromise of 1820. A local farmer rediscovered the original stone, which had seen better days. The monument got a makeover in '55 by the Lions Club of Southwest City, Missouri. Only six state tripoints include Oklahoma, making the OKARMO Corner a one-of-a-kind road-trip destination.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons