The Castle Hotel was formerly a matching pair of Georgian houses. The
houses were originally designed by John Ensor who was a pupil of
Richard Castle, a famous architect who designed many of the great
Irish houses including Russborough House, Leinster House and
Powerscourt House. John later succeeded to Castle's practice after the
latter's death in 1751 and supervised the erection of the Rotunda
Hospital; he designed the adjoining Round Room or Rotunda.
