Four Corners Monument
The Four Corners Monument marks the quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet. It is the only point in the United States shared by four states, leading to the area being named the Four Corners region. The monument also marks the boundary between two semi-autonomous Native American governments, the Navajo Nation, which maintains the monument as a tourist attraction, and the Ute Mountain Ute Tribe Reservation.
Four Corners, Florida
Although the Four Corners area is termed a quadripoint, an analysis of the official borders shows that what is called a quadripoint is actually two sets of tripoints. Lake County, Orange County and Osceola County share a border near the westbound lane of the Space Coast Parkway. Lake County, Polk County and Osceola County share a border just south of the eastbound lane of the Space Coast Parkway. Polk County, Florida and Orange County, Florida do not actually border each other but are located approximately 60 feet apart.