It was later the home of barrister and Master of the Rolls John Philpot Curran.
On the Portland stone facade pediment he placed his parents' arms: on the left the Milesian lion, with the Red Hand of Ulster above, for the Magennis clan of County Down; and on the right the arms of the Lee family, Dublin builders from about 1700.
The interior of the building is hugely elaborate and decorative, with a staircase and ballroom lined with alabaster.
The staircase also has ornate ironwork, marble columns and circular roof lights.
The restored Cascade and exotic tree ferns all help to create a sense of wonder in the 'Secret Garden'.