‘Yellowstone is an amazing place’: America’s oldest national park celebrates 150 years

The pristine wilderness is not just a tourist attraction but also the lifeblood of an entire region of the U.S.

America’s oldest national park – Yellowstone – turned 150 this year.

The park's 2.2 million acres that span Idaho, Montana and Wyoming were designated the country’s first national park by President Ulysses S. Grant on March 1, 1872. It was not just the first national park in the U.S., but also the first such designation in the world.

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"Yellowstone is an amazing place," Rich Jehle, a ranger at Yellowstone, told FOX Weather multimedia journalist Robert Ray. "It is a unique landscape. There’s nothing else like it in the world."

The park is home to 67 different species of mammals – the largest concentration of mammals in the Lower 48. It’s also the only place in the U.S. where wild bison have lived continuously since prehistoric times. It is estimated that about 5,000 bison now call the park home.

Yellowstone is also where half of the world’s active geysers are located.

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Elk graze at Yellowstone National Park in 2022. (Robert Ray)

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A bison is seen at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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A bison is seen at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Bison graze at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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A proghorn walks along a ridge in Yellowstone National Park in 2022. (Robert Ray)

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A road cuts through the majestic landscape of Yellowstone National Park in 2022. (Robert Ray)

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A river runs through Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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A river runs through Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Water trickles across the ground at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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A geothermal pool is seen at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Steam rises from a geothermal vent in Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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A geyser explodes at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Dried portions of a lake bed are seen at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Bison graze at Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Fall foliage is seen in trees along a river bank in Yellowstone National Park in 2022. (Robert Ray)

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A river runs through Yellowstone National Park in October 2021. (Robert Ray/FOX Weather)

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Icy slopes are seen at Yellowstone National Park in 2022. (Robert Ray)

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Steam rises from a rock formation at Yellowstone National Park in 2022. (Robert Ray)

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Water flows over rocks in a river at Yellowstone National Park in 2022. (Robert Ray)

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A river winds through Yellowstone National Park in 2022. (Robert Ray)

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Hills and mountains are seen at Yellowstone National Park in 2022. (Robert Ray)

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Water flows through a river in Yellowstone National Park in 2022. (Robert Ray)

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Water flows through a river inside Yellowstone National Pak in 2022. (Robert Ray)

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An elk rests in the foreground as mountains tower above rolling hills in the background at Yellowstone National Park in 2022. (Robert Ray)

Rivers that flow out of the Yellowstone region help provide water to about 60 million Americans across the West. Their flow is highly dependent on snowfall, but average annual snowfall has decreased by 23 inches since the 1950s, according to a report published last year.

The legislation that was signed by Grant 150 years ago said the national park was meant to preserve the land for the "benefit and enjoyment of the people." Jehle said that sentiment is what makes Yellowstone so special.

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"What Yellowstone is really about – not just the landscape, the wilderness, the wildlife, the geysers – it’s about more of an idea – the national park idea, which is the idea that there are some places that are so unique and so special that we need to set them aside and preserve them for future generations."

Nearly 5 million people enjoyed Yellowstone in 2021, setting a visitation record for the park.