Haydenville is an interesting little town in the Hocking Valley of southeastern Ohio. Haydenville was a company town built around a brick factory that made a unique looking glazed style of brick primarily used for drainage. Many of the homes in Haydenville were built with this brick giving the town a unique look. Haydenville was established in 1852 but most of the existing buildings appear to have been constructed in the early 1900s. Haydenville doesn't have any surviving commercial buildings and the brickworks was torn down in the 1980s. Below the Haydenville cemetery on its northern corner is a still open but abandoned (mile long) tunnel used to transport clay from clay pits to the brick factory. There were no remnants of the factory that I could find in the wooded area where it once stood. The remnants of a lock that was built as part of the Hocking canal ( 1829-1842) are just North of town at the Southeast corner of highway 33 and 25.