Old Faithful

Old Faithful is the world's most famous geyser, which has been delighting visitors with its remarkable regularity since 1870. Every 60-110 minutes, it ejects a stream of boiling water up to 55 meters high, offering a natural spectacle 17-20 times a day.

It was this geyser that inspired the creation of the world's first national park in 1872. The surrounding Upper Geyser Basin is home to hundreds of other geysers and hot springs, creating the largest concentration of geothermal activity in the park.