Hibernia House is a historic home located in Hibernia County Park, near Wagontown, West Caln Township, Chester County, Pennsylvania. It was built in four phases between the late 18th and early 20th century. The original section was a two-story, stone dwelling measuring 18 feet by 24 feet. In 1798, a  1 1⁄2-story, stone kitchen addition was built. In 1821, the mansion house was built making the older sections the west wing. The mansion house is a  2 1⁄2-story, four-bay, stone structure measuring 45 feet by 43 feet. The house was modified between 1895 and 1910 to add a 33 foot wide pedimented pavilion, ballroom addition, and addition to the west wing.