|caption = Entrance front of Balloch Castle |locmapin = Scotland West Dunbartonshire |map_caption = Location in West Dunbartonshire |coordinates = |designation1 = category a 14 May 1971 |designation1_number = |designation2 = Inventory of gardens and designed landscapes |designation2_date = 1 July 1987 |designation2_number = |designation2_offname = }} Balloch Castle is an early 19th-century country house situated at the southern tip of Loch Lomond, in West Dunbartonshire, Scotland. Balloch was a property of the Lennox family from the 11th century, and the old castle was built in the 13th century. In the 19th century the estate was purchased by John Buchanan of Ardoch, who demolished the ruins of the old castle and erected the present building. The Tudor Gothic architecture is the work of Robert Lugar. In 1915 Balloch was bought by Glasgow City Corporation, and has been leased by West Dunbartonshire Council since 1975. The estate was designated as a country park in 1980, and since 2002 has been part of Loch Lomond and The Trossachs National Park. Although the house has been periodically used for visitor facilities and council offices, it is now included on the Buildings at Risk Register. Balloch Castle is a category A listed building, and the estate is included on the Inventory of Gardens and Designed Landscapes in Scotland. History The old castle The lands of Balloch were granted to the Lennox family in 1072 by King Malcolm III, forming part of the ancient earldom of Lennox. The earls of Lennox built the original Balloch Castle around 1238, and held it until approximately 1390. Many of their early charters were dated at Balloch. The earls afterwards moved their base to the island of Inchmurrin in Loch Lomond, where the remains of a late 14th-century castle can still be seen. Situated nearer the water than the present day castle, there are no standing remains, the earthworks can still be seen. An irregular mound, approximately , surrounded by a ditch up to across. This site is given statutory protection as a scheduled monument. In the 15th century Balloch, along with the earldom of Lennox, came to the Stewarts of Darnley. It stayed in the Stewart family until 1652 when the 4th Duke of Lennox sold it to John Colquhoun of Luss. Balloch Castle The present castle was built as a residence in 1808–1809 at the order of John Buchanan of Ardoch (1761–1839), who had bought the estate