What is the four corners region of US?

The Four Corners region of the United States is a region that is where the boundaries of four states meet: Arizona, New Mexico, Colorado, and Utah. The region is centered on the Four Corners Monument, which is located in San Juan County, Utah. The Four Corners Monument is a stone marker that marks the exact point where the boundaries of the four states meet. The Four Corners region is a popular tourist destination, and visitors can often be found taking pictures of themselves standing in the four states at once.