Tower Fall, a 132-foot waterfall on Tower Creek in northeastern Yellowstone National Park, drops into a narrow gorge about 1,000 yards above the creek’s meeting with the Yellowstone River. Named in 1870 for the rock pinnacles crowning the cascade, it became one of the best-known features encountered by Yellowstone’s earliest explorers, including the Cook–Folsom–Peterson and Washburn-Langford-Doane expeditions. The falls also contributed to Yellowstone’s preservation: Thomas Moran’s 1871 painting of the scene helped persuade Congress to create Yellowstone in 1872 as the world’s first national park. Tower Fall remains significant for both its striking geology and its role in the park’s exploration and founding story.