Grand Prismatic Spring, Yellowstone National Park

4.7
#3 of 83 in Parks in Yellowstone National Park
Hot Spring · Nature / Park
Create an itinerary including Grand Prismatic Spring
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.
Create a full itinerary - for free!

Grand Prismatic Spring reviews

Rate this attraction
TripAdvisor traveler rating
TripAdvisor traveler rating 4.5
3,146 reviews
Google
4.8
TripAdvisor
  • I absolutely loved seeing these beautiful colours. Went with my daughter and we were in awwww! I highly recommend visiting this amazing site! 
    I absolutely loved seeing these beautiful colours. Went with my daughter and we were in awwww! I highly recommend visiting this amazing site!  more »
  • We enjoyed this area of Yellowstone very much. The colors are deep and gorgeous. The walkway is nicely done and a fairly flat boardwalk along the spring. We took many photos here, and they are among.....  more
    We enjoyed this area of Yellowstone very much. The colors are deep and gorgeous. The walkway is nicely done and a fairly flat boardwalk along the spring. We took many photos here, and they are among.....  more »
Google
  • Never before I’ve seen such colors in nature
  • Very beautiful but very crowded on weekend

Plan your trip to Yellowstone National Park

  • Get a personalized trip
    A full day by day itinerary based on your preferences
  • Customize it
    Refine your trip. We'll find the
    best routes and schedules
  • Book it
    Choose from the best hotels and activities. Up to 50% off
  • Manage it
    Everything in one place. Everyone on the same page.