Historic Locust Grove is a 55-acre 18th-century farm site and National Historic Landmark situated in eastern Jefferson County, Kentucky. The site is owned by the Louisville Metro government, and operated as a historic interpretive site by Historic Locust Grove, Inc.The main feature on the property is the ca. 1790 Georgian mansion that was the home of the Croghan family and gathering place for George Rogers Clark, Lewis and Clark, and U.S. Presidents. In addition to the mansion there is the Visitors Center that houses a gift shop, museum and meeting space.HistoryThe site was founded in 1790 by William Croghan and his wife Lucy Clark Croghan. Lucy was the sister of the younger William Clark of the Lewis and Clark Expedition and the older George Rogers Clark, former surveying partner of William Croghan.On November 8, 1806, Meriwether Lewis and William Clark, tracing their way back from the Pacific Ocean, arrived at Locust Grove to a homecoming where Lucy Clark Croghan and her family welcomed them back from their journey. Locust Grove became the only residence still in existence west of the Appalachian Mountains to have sheltered Lewis and Clark. In the Fall of 2006, Locust Grove commemorated the 200th anniversary of Lewis and Clark's return.