The Market House, also known as The Market Hall and The D.L.& W. Hall, is a historic market building located at Oswego. It was built in 1835 and is a massive brick and stone structure overlooking the Oswego River. A section of the basement is believed to have been used as a jail. In 1864 the city sold it to the Oswego and Syracuse Railroad, that used it for the next 80 years as office and storage space. The railroad upgraded the building with a bracketed cornice and elaborate cupola. It was listed on the National Register of Historic Places in 1974.