Perhaps the most famous geyser basin in the Yellowstone, and the highest concentration of geothermal features in the park.
Of the Yellowstone's several geyser basins, the Upper Geyser Basin's collection of geysers is among the best. The famous Old Faithful geyser is located here, which erupts every 30 - 120 minutes, and is considered to be one of the most predictable geothermal features on the planet. It shoots scalding water up to 30 metres in the air. The basin also has 4 other large predictable geysers, namely the Grand Geyser, Castle Geyser, Daisy Geyser and Riverside Geyser. Along with the famous geysers, you will find several stunning hot springs like the Blue Star spring near the Old Faithful and also numerous other geothermal features. The Upper Geyser Basin is located south of Norris Geyser Basin, along the caldera.