Four Corners Monument

Four Corners is a symbolic marker off U.S. 160 in the midst of the Navajo Nation and Ute Mountain Indian Reservation – it’s the only point where 4 U.S. States intersect: Colorado, New Mexico, Arizona, and Utah.

U.S. Highway 160 leads you directly to the Monument: turn north into State Road 597 and drive for another ca. 1/2 mile. Signs will lead you the way as well. Distances: to Cortez, Colorado: ca. 40 mi (65km). To Kayenta, Arizona: ca. 77 mi (124 km).

The original marker was set in 1912 but replaced in 1992 by a nicer brass marker enclosed by granite. To reiterate, it’s the only place where you can actually be in 4 states at the same time when you set your feet on it.
This point war first surveyed in 1868.