National Park & Nature

Grand Prismatic Spring

📍 Grand Prismatic Spring, Yellowstone National Park, WY 82190, USA

1 photos

4.8/ 5.0

★★★★★

Introduction

Grand Prismatic Spring is the world's third-largest hot spring in Yellowstone National Park. Its ~90-meter diameter and stunning rainbow-like colors — blue, green, yellow, orange and red radiating outward — make it one of Yellowstone's most visually spectacular natural wonders. The rainbow colors are produced by heat-loving microorganisms (thermophiles) living at different temperatures: the center is clearest deep blue (~87°C), with colors graduating outward through green, yellow, orange to red as temperatures decrease — a natural rainbow imprinted on the earth. Visitors can view the spring from a nearby boardwalk, but the Grand Prismatic Spring Overlook Trail (~2 km from Fairy Falls parking) offers a dramatic aerial view of the entire colorful disc amid steam and rivers. Seeing Grand Prismatic Spring and its rainbow masterpiece is one of Yellowstone's most unforgettable experiences.

✨ Highlights

Rainbow colors

Blue-to-red rainbow gradient produced by heat-loving microorganisms — visually stunning.

Giant spring

~90 m diameter — the world's third-largest hot spring.

Overlook view

The overlook trail offers a dramatic aerial view of the entire colorful disc.

Yellowstone icon

One of Yellowstone's most visually spectacular and iconic sights.

🛈 Practical Info

→Entrance：Per-vehicle fee, valid 7 days; for reference.

→Best time：Midday sun for the most vivid colors; calm days have less steam.

→Overlook：Highly recommended: Grand Prismatic Overlook Trail for the aerial view.

→Steam：Steam can obscure the view; watch the wind direction.

→Combine：Pair with Old Faithful, Mammoth Hot Springs and other Yellowstone sights.

💡 Tips

• Highly recommended: the Overlook Trail (~2 km) for the aerial view of the entire spring.

• Midday sun gives the most vivid colors; calm days have less steam blocking the view.

• Steam can obscure the view; watch the wind direction.

• Pair with Old Faithful, Mammoth Hot Springs and other Yellowstone sights.

FAQ

Any practical tips for visiting Grand Prismatic Spring?

Highly recommended: the Overlook Trail (~2 km) for the aerial view of the entire spring. Midday sun gives the most vivid colors; calm days have less steam blocking the view.

Information on this page is compiled from public sources. Opening hours, ticket prices and other details may change — please verify with official sources before your visit.