Grand Prismatic Spring, Yellowstone National Park

4.7
#3 of 83 in Parks in Yellowstone National Park
At nearly 113 m (370 ft) across and 37 m (121 ft) deep, Grand Prismatic Spring holds the title of the largest hot spring in America and one of the largest in the world. A premier attraction at Yellowstone National Park, the spring's fame traces back to early explorers and fur trappers who first noted it in the early 1800s. The boiling pool constantly steams and bubbles, with its vivid, rainbow-like appearance--the result of pigmented bacteria. To get a close-up view, walk along the park's boardwalk, which leads to a route close to the water's edge. Stay on the path, as the high temperatures of the pool can be dangerous. Plan to visit Grand Prismatic Spring and other customer-reviewed, writer-recommended Yellowstone National Park attractions using our Yellowstone National Park travel route app.
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Grand Prismatic Spring Reviews

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TripAdvisor Traveler Rating
TripAdvisor Traveler Rating 4.5
3,006 reviews
Google
4.8
TripAdvisor
  • There's too much steam in the morning hours to see the incredible colors. Visit in the afternoon or evening.  more »
  • We went early (8am) in order to beat the crowd but the sun was not bright so it was just "steamy" instead! Try going after 6pm in order to beat the crowds but make sure the sun is still bright. Tip.....  more »
Google
  • Amazing place! One of the world’s largest and deepest hot springs. Beautiful!
  • There is a hike to a top overlook that is highly recommend. Wonderful colors. Amazing.

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