Grand Prismatic Spring, Yellowstone National Park

4.8
#3 of 122 in Things to do 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
3,152 reviews
Google
4.9
TripAdvisor
  • Grand prismatic springs is also a long walk but not as long as the morning Glory pool because it's not such a high incline. If I were to choose between the two and I weren't used to walking I would... 
    Grand prismatic springs is also a long walk but not as long as the morning Glory pool because it's not such a high incline. If I were to choose between the two and I weren't used to walking I would...  more »
  • Our most favorite thing in Yellowstone. Make sure you park at Fairy Falls and hike up to the overview, but make sure you do this in the afternoon. We did it both in the morning and again the next... 
    Our most favorite thing in Yellowstone. Make sure you park at Fairy Falls and hike up to the overview, but make sure you do this in the afternoon. We did it both in the morning and again the next...  more »
Google
  • Recommend getting there around 9am, hike to the falls passed the springs. By the time you return the morning mist and the like will have burned off and the view of the spring will be best. The colors are just as the pics show, very vibrant and unique. We even saw a bison and other wildlife which was a bonus.
  • Arrive early before the crowds, otherwise you will be hard pressed to get a parking spot! Also be aware however that if you visit during cooler times of the day, steam from the hot springs May obstruct your view of the colorful pools. There are multiple pools and geysers along this single boardwalk, each with unique colors and depth. The entire boardwalk is wheelchair and stroller friendly, however it is a little bumpy! You can also view Grand Prismatic from a hiking trail to the south that winds up the mountain to give you a view from higher up.

Plan your trip to Yellowstone National Park

  • Compose it!
    Your own itinerary for your car vacation, beach vacation, city trip, any near or distant journey ... ready within 10 minutes.
  • Customize it.
    Refine your plan. We find the best routes and opportunities.
  • Book it.
    Choose from the best accommodations (Expedia, AirBnB), airlines and activities, by yourself or share with travel professionals for the utmost experience. Up to 50% discount!
  • Do it yourself.
    Or share your plan with travel professionals for a customized trip