Pioneer Park, also known as the Henry Webber House or the Webber-Paepcke House, is located on West Bleeker Street in Aspen, Colorado, United States. It is a brick structure erected in the 1880s, one of the few such homes in the city. In 1987 it was listed on the National Register of Historic Places.
Henry Webber, its builder, was a shoe merchant who grew wealthy from his mining investments during Aspen's original growth during the Colorado Silver Boom. The house is said to be haunted by the ghost of his wife Harriet, who died under controversial circumstances. It is the only intact house in the Second Empire architectural style in the city, particularly on the interior. At one time it was owned by Walter Paepcke, the Chicago businessman who led Aspen's mid-20th-century renaissance as a ski resort town.
While Paepcke owned the house, he invited Albert Schweitzer to Aspen to give the keynote speech at a festival he organized to commemorate Johann Wolfgang von Goethe's bicentennial. It was Schweitzer's only visit to the U.S., and he stayed in the carriage house at the rear of the property. Today that building, a contributing resource to the Register listing, is known as Schweitzer Cottage. The house remains a private residence.
The house is located on the north side of West Bleeker between North Third and North Fourth streets in Aspen's residential West End. Main Street (State Highway 82) is a block to the south, and the commercial areas of downtown several blocks east. The terrain is flat, with Aspen Mountain rising abruptly and steeply two blocks to the south.