Graeme Park is an historic site and National Historic Landmark at 859 County Line Road in Horsham, Montgomery County, Pennsylvania. It is owned by the Pennsylvania Historical and Museum Commission and operated by the non-profit group, The Friends of Graeme Park. It is the only surviving residence of a colonial-era Pennsylvania governor. Graeme Park was constructed in 1722 by Sir William Keith as a summer residence and alternative to his governor's mansion at Shippen House on Second and Spruce Streets in Philadelphia. The house, originally known as Fountain Low, has been largely unchanged since its construction except for a restoration by Dr. Thomas Graeme in the mid 18th century and a minor restoration by the Pennsylvania Historical and Museum Commission in the 1960s. Timeline 1721 Construction of the malthouse begins. A malthouse is a building in which brewers create malt by starting the germination process of barley or other grains. The malt is then used as a key ingredient in the making of beer, ale and malt liquor. This malthouse was one of several attempted commercial ventures undertaken by Sir William Keith during his term as governor of Colonial Pennsylvania. His other businesses included a copper mine located west of the Susquehanna River in disputed territory and a foundry on the Christiana River near New Castle, Delaware. The malthouse was constructed during a time of financial complications between Great Britain and her American colonies. Trade was slowed tremendously and supplies of grain were rotting on the idled ships in the colonial ports in cities like Philadelphia. Keith took advantage of the need to have the grain processed and malting the grain was a good way to preserve it for a time. 1722 or 1723 Construction on the mansion at Graeme Park begins. Graeme Park was originally called "Fountain Low" by Sir Keith. It is also known as the "Keith House" in honor of Sir William Keith its builder and first resident. Fountain Low was built on of land that Keith acquired as governor. He received the land for little or no cost as a debt payment given to the Provincial government of Pennsylvania by the estate of Samuel Carpenter who had died with a considerable debt owed to colony. Over 90 workmen worked to complete Fountain Low and its surrounding buildings. Sir Keith even got the Provincial government to extend two roads to his property in Horsham. Evidence points to