Four Corners
The Four Corners is a region of the United States consisting of the southwestern corner of Colorado, southeastern corner of Utah, northeastern corner of Arizona, and northwestern corner of New Mexico. The Four Corners area is named after the quadripoint at the intersection of approximately 37° north latitude with 109° 03' west longitude, where the boundaries of the four states meet, and are marked by the Four Corners Monument. It is the only location in the United States where four states meet. Most of the Four Corners region belongs to semi-autonomous Native American nations, the largest of which is the Navajo Nation, followed by Hopi, Ute, and Zuni tribal reserves and nations. The Four Corners region is part of a larger region known as the Colorado Plateau and is mostly rural, rugged, and arid. In addition to the monument, commonly visited areas within Four Corners include Monument Valley, Mesa Verde National Park, Chaco Canyon, Canyons of the Ancients National Monument and Canyon de Chelly National Monument. The most populous city in the Four Corners region is Farmington, New Mexico, followed by Durango, Colorado.
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.