Hillsborough House, later called Hillsborough Hall, is a large, stone-built mansion constructed in the Adam style in the latter part of the 18th century. It stands 2½ miles NW of the centre of Sheffield at grid reference SK331901 in the suburb of Hillsborough within Hillsborough Park, a council-owned public recreational area. For 124 years the house was a private dwelling, but since 1906 it has housed the Hillsborough branch library.