The natural feature often depicted as a hot spring and famous for its colors in the US is Yellowstone National Park's Grand Prismatic Spring. Known for its vibrant hues of blue, orange, and green, this hot spring is the largest in the United States. The brilliant colors are a result of microbial mats and mineral deposits surrounding the spring. Yellowstone, as the first national park in the world, is home to diverse geothermal features and a variety of wildlife, making it a key destination for nature lovers and tourists.