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Grand Prismatic Spring, Yellowstone National Park

(1,900+ reviews on the web)
Hot Spring Nature / 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. Put Grand Prismatic Spring and other Yellowstone National Park attractions into our Yellowstone National Park travel itinerary planner, and watch your holiday take shape.
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Reviews
TripAdvisor
  • I recommend the hike when it opens. You can not get a good view from the boardwalk. It's still something I'm glad I did, but I wish I could have seen it from above.  more »
  • We came here expecting to see the views that you see in all of the postcards, books etc but when we went there was so much, what I guess is steam, coming off of the spring that you can't really see th...  more »
  • The Grand Prismatic Spring is otherworldly. The colors are amazing, particularly when the weather conditions help to keep the steam down. I can't wait until the new trail is completed off of the Fairy...  more »
Google
  • One of the most attractable wonder. Best time to actually experience color spectrum is sunny shiny day that will reflect the sunlight through water prism. Really got in love with the wonderful natural landscape, will surely visit there.
  • One of my top place in Yellowstone. It is a huge boiling colorful pool in midway geyser basin. But you cant see the real beauty from ground level. You should climb to the hill to have a better view of the colours of pool.
  • Walk in the evening after the tour buses leave for less crowds. Great place to see.
  • One of my favorite wonders in Yellowstone. Stunning Spring.
  • Amazing, one of the most beautiful places on earth. Don't miss it