The “first national park” was born 151 years ago, on March 1, 1872, when President Ulysses S. Grant signed into law the Yellowstone National Park Protection Act.

Most people already know a thing or two about Yellowstone National Park. It’s the world’s first national park and home to Old Faithful. “Probably 95% of people that come to Yellowstone visit ...

Check out these 152 fun facts for Yellowstone National Park's 152th anniversary in 2024 — including notable quotes about the national treasure that is Yellowstone.

Yellowstone National Park is 3,472 square miles or 2,221,766 acres, and is 80% forest, with only a small percent of the whole park developed.