The Grand Prismatic Spring, Yellowstone National Park, Wyoming, United States. Stock Image

View of Midway Geyser Basin. Thare are beautiful thermal features and the absolutely magical Grand Prismatic Spring. The Grand Prismatic Hot Spring is the most photographed thermal feature in Yellowstone. That's because of its crazy-bright colors and enormous size. The third largest spring in the world, the Grand Prismatic is bigger than a football field at 370 feet in diameter.