The Queen's Laundry Bath House is a ruinous structure in Yellowstone National Park. The log building sits on the edge of the thermal feature in the Lower Geyser Basin. The water at this location is somewhat cooler than the norm, allowing early tourists to bathe. Begun by Yellowstone park superintendent Philetus Norris, the bath house was intended to have two rooms and a dirt-covered roof, but was never completed. Begun in 1881, it may be the oldest extant park visitor structure in the National Park Service system.