Mount Vernon Furnace

Mount Vernon Furnace, also known as Jacob's Creek Furnace and Alliance Iron Works, is a historic iron furnace located at Bullskin Township, Fayette County, Pennsylvania. It was built in 1795 and rebuilt in 1801. It is a stone structure measuring 24 feet square and 30 feet high, with two arches. It was built as a blast furnace and went out of blast in 1825.

It was added to the National Register of Historic Places in 1991.