7 castles, from Norman keeps to the tower houses that Gaelic and Anglo-Irish families raised in their hundreds — and the ones that are now four walls and a jackdaw.
Ashtown Castle (Irish: Caisleán Bhaile an Ásaigh) is a tower house in the Phoenix Park in Dublin, Ireland. It was found hidden within the walls of a much larger and more recent Georgian building, the Under Secretary's Lodge also known as Ashtown Lodge, that was being used by the Papal Nuncio until 1978.
Baggotrath Castle, or Baggotsrath Castle, was a castle situated at present-day Baggot Street in Dublin city centre. It was built in the late thirteenth century by the Bagod (later called Baggot) family, for whom it was named. For much of its history, it was owned by the Fitzwilliam family.
Drimnagh Castle (Irish: Caisleán Dhroimeanaigh) is a Norman castle located in Drimnagh, a suburb of Dublin, Ireland. It is the only remaining castle in Ireland with a flooded moat around it; this moat is fed by a tributary of a local river, the Camac. Drimnagh Castle Secondary School is located next to the castle.
Dublin Castle (Irish: Caisleán Bhaile Átha Cliath) is a major Irish government complex, conference centre, and tourist attraction. It is located off Dame Street in central Dublin.
Killiney Castle, also known as Mount Malpas, Rocksborough, or Loftus Hill, and now known as Fitzpatrick Castle Hotel, is an 18th-century manor house near Killiney in County Dublin, Ireland. The castle was converted into a hotel, which has been open since 1971.
Merrion Castle was a castle situated about 300m south of the present-day Merrion Gates, to the south of Dublin city centre. Built in the early fourteenth century, it was from the sixteenth century to the early eighteenth century the principal seat of the Fitzwilliam family, who acquired the title Viscount Fitzwilliam.
Roebuck (Irish: Reabóg), also originally known as "Rabuck", is a townland and the name of a former estate in the baronies of Dublin and Rathdown in Ireland. The townland incorporates roughly all the land in the triangle between Clonskeagh, Dundrum and Mount Merrion.
Descriptions are Wikipedia's own opening lines, used under CC BY-SA 4.0 with a link to each article; the list and the coordinates come from the same place. Nothing here is a guide to access — many of these are private homes or stand in private fields.
What stood in Dublin before anybody thought of building a keep.