The Carnegie Free Public Library, also known as the Carnegie Town Hall, is a historic Carnegie library located at 235 W. 10th St. in Sioux Falls, South Dakota. The library was built in 1903 through a $25,000 grant from the Carnegie Foundation. Architect Joseph Schwartz designed the building, a Romanesque Revival structure with Neoclassical influences. The library was built from locally quarried quartzite, a popular local building material at the turn of the century. While the building's massive form and rough-hewn stone exterior are Romanesque, it features a Greek pediment above the entrance supported by four pilasters on either side of the doorway. The building represents the only use of Classical details in a quartzite building in Sioux Falls.