 Ballyhaise House, situated on the Annalee river (a tributary of the Erne), was built for the Newburghs, a local landowning family, in the 1730s.It is said to contain the earliest surviving oval room in Ireland and Britain.The building was traditionally credited to Richard Cassels, a German architect living in Dublin, who designed many of the capital's finest buildings and squares (including Leinster House).