Several of the interior scenes were filmed in Powerscourt House, an 18th-century mansion in County Wicklow, Republic of Ireland. The house was destroyed in an accidental fire several months after filming (November 1974), so the film serves as a record of the lost interiors, particularly the Saloon which was used for more than one scene. The Wicklow Mountains are visible, for example, through the window of the saloon during a scene set in Berlin. Other locations included Kells Priory (the English Redcoat encampment) Blenheim Palace, Castle Howard (exteriors of the Lyndon estate), Huntington Castle, Clonegal (exterior), Corsham Court (various interiors and the music room scene), Petworth House (chapel), Stourhead (lake and temple), Longleat, and Wilton House (interior and exterior) in England, Dunrobin Castle (exterior and garden as Spa) in Scotland, Dublin Castle in Ireland (the chevalier's home), Ludwigsburg Palace near Stuttgart and Frederick the Great's Neues Palais at Potsdam near Berlin (suggesting Berlin's main street Unter den Linden as construction in Potsdam had just begun in 1763). Some exterior shots were also filmed at Waterford Castle (now a luxury hotel and golf course) and Little Island, Waterford. Moorstown Castle in Tipperary also featured. Several scenes were filmed at Castletown House outside Carrick-on-Suir, Co. Tipperary, and at Youghal, Co. Cork.