The Grand Prismatic Spring, Wyoming, USA. The biggest hot spring in the country is 113 m (370 ft) wide and is found in Yellowstone National Park. It got its name due to the vibrant iridescent colors, that match those of a rainbow: red, orange, yellow, green, and blue. The effect is caused by bacteria.
Namely the colorful rings of the spring make it so exceptionally attractive. The color of the spring’s rim changes every season, except for the center, which is free from bacteria due to the extreme temperature of 70 °C (160 °F). There is a hiking trail, which enables to observe the spring in close vicinity, while from the top of the hill a great aerial view opens.
Why go there?
It is the third-largest hot spring in the world and indeed impressive.
When to go there?
How to get there?
There are various airports close to Yellowstone National Park. Also get there by bus from Idaho, Bozeman, Cody or Jackson.