 The service wings were often only accessed by tunnels as at Rockingham house and Castle Coole, both, in Ireland.At Mentmore Towers, where the service wing is a large block the same size as the mansion itself, the main part of the house is built on artificially raised ground allowing it to tower over the service wings which are in reality of a near similar height.The only windows to Mentmore's service wings were to an inner courtyard, thus preventing the servant's looking out on their employers, or their employers catching accidental sight of them.