The Old Faithful Inn is a hotel located in Yellowstone National Park, Wyoming, United States, with a clear view of the renowned Old Faithful Geyser.
With its spectacular log and limb lobby and massive (500-ton, 85-foot) stone fireplace, the inn is a prime example of the "Golden Age" of rustic resort architecture, a style which is also known as National Park Service Rustic. It is also unique in that it is one of the few log hotels still standing in the United States.
The structure is the largest log hotel in the World; possibly even the largest log building in the world. In 2007 the American Institute of Architects conducted a survey to determine the 150 favorite buildings in America; the Old Faithful Inn ranked 36. The Inn, which was designated a National Historic Landmark in 1987, is itself part of the Old Faithful Historic District.