Tower House on The Potomac. Administrative office and Home of the World Wide Baraca philathea Union Bible Classes, Mount Vernon, Virginia. The home is situated atop a knoll. Overlooking the broad Potomac, formerly a part of the original George Washington estate the rolling grounds of five acres are beautifully studded with magnificent elms, holly and cedar. tower House is on the Mount Vernon Memorial Highway, less than two miles from the famous George Washington Home.