Grand Prismatic Spring Hot Springs, characterized by a charming natural beauty, where the colors are gradient in its edges to become like the colors of the bright spectrum, and this phenomenon is caused by the types of bacteria and microbes that live in the warm waters, at a diameter of 370 meters, making it the third largest hot water springs in the world , and the first in the United States, and the springs are located within the territory of Yellowstone National Park of Wyoming.