Unofficial guide. Not the National Monuments Service, the OPW, Fáilte Ireland or the landowner. Disclaimer
At a glance
- TypeCastle - tower house
- Date or period mentioned19th century
- Recorded sizeext. E-W 8.10m, 7.9m E-W
What to look for
- Spiral stair
- Machicolation
- Vaulted floor
- Garderobe
- Fireplace
- Corbels
Picked out from the Archaeological Survey description below.
Can you visit?
- No source says it is open to the public.Most monuments in Ireland stand on private farmland.
- Ask the landowner before crossing fields, close gates, leave the stones as you find them.Visiting responsibly
History and description
Known as Lanistown Castle, the tower house is situated in a low-lying position inside the entrance gates of Newbridge House. This is a three storey tower house (ext. dims. E-W 8.10m, 7.9m E-W) with stepped battlements marked by a cornice and a projecting angle tower in the SW. Formerly entered through a pointed arched doorway on the N side.
Full archaeological record 296 words
Known as Lanistown Castle, the tower house is situated in a low-lying position inside the entrance gates of Newbridge House. This is a three storey tower house (ext. dims. E-W 8.10m, 7.9m E-W) with stepped battlements marked by a cornice and a projecting angle tower in the SW. Formerly entered through a pointed arched doorway on the N side. There is a barrel vault over the ground floor, which is lit by a pointed arched opening (now blocked) on the W side. The SW spiral stairs provides access to chambers, with corbelled roofs, carried on squinces. There is a fireplace at first floor level and machicolation carries a flue to the second floor. The windows are plain in general except for a pointed arched window with sandstone jambs in the S wall of the second floor. Traces of a lofted building survive on the E side (Healy 1975, 25; Moylan 1961, 40). The E side of the building extends (c.1m) and supported a mural passage, which originally led into a garderobe. This is a two-storey structure with first floor supported on a pointed arched vault in the northern half. The S portion is damaged. First floor is accessed from a doorway in the NE blocked. There is a small loft area with a high pitched gable over it.
A 1776 survey shows large 1 storey residence to east-used into the 19th century when Cobbe family purchased tenants (John Grace) interest in surrounding lands and demolished house in c.1820. John O'Donovan told by Charles Cobbe in 1830s that there were extensive buildings to north and east of castle prior to demolition. There is a bulge in the wall of the northeast corner stairwell at first floor; disintegration in masonry and substantial hole subsidence at south east corner.
Archaeological Survey of Ireland, National Monuments Service (CC BY 4.0) · Compiled by Geraldine Stout · Updated 16 January 2015. It describes the site as it was when surveyed.
More castles nearby
Visitor site National MonumentSwords Castle
Castle - Anglo-Norman masonry castle · Townparks (Nethercross By.) · Dublin · 3.8 km away
Visitor site Malahide Castle
Castle - tower house · Malahide Demesne · Dublin · 4.3 km away
Saint Helens Castle
Castle - motte and bailey · Sainthelens · Dublin · 5.5 km away
Rush Demense Castle
Castle - tower house · Rush Demesne · Dublin · 8.3 km away
Visitor siteLambay Island
House - fortified house · Lambay Island · Dublin · 10 km away

Dunsoghly Castle
Castle - tower house · Dunsoghly · Dublin · 11 km away
Also recorded nearby
Named sites within 5 km with only a short entry in the Archaeological Survey.
- St. Werburgh's WellRitual site - holy well · Commons East · 4.1 km · official record
Named on Duncan's map (1821) as 'St. Werburgh's Well'. There is however another St Werburgh's well to the southwest (DU011-045----). This well has been built over. No visible remains.
Visitors' notes
Badges are opinions of visitors - not verified facts. One vote per badge and visitor; no account needed.
Best time to visit
What's missing on this page?
Share a tip to find it
Share a local tradition or story
Suggest a correction
Suggest the right map location
Report a duplicate page
Ask a question
Do not include personal data. See our privacy notice.
Around Lanestown Castle
Other heritage nearby
- Bridetree WellHoly well · 3.5 km
- St. Catherine's WellHoly well · 3.6 km
- St Bridget's WellHoly well · 3.9 km
- Lady WellHoly well · 4.1 km
- Swords Round TowerRound tower · 4.2 km
- Belfry at St Columba'sAncient church · 4.2 km
Recorded within 5 km
- 14 holy wellsArchaeological Survey of Ireland
- 9 ancient churchesArchaeological Survey of Ireland
- 8 castlesArchaeological Survey of Ireland
- 3 ringfortsArchaeological Survey of Ireland
- 3 monastic sitesArchaeological Survey of Ireland
- 2 round towersArchaeological Survey of Ireland
- 1 abbey or friaryArchaeological Survey of Ireland
Walks and trails
- Howth - Bog of Frogs LoopWalking Trail · 12.1 km · nearest point 13 km
- Howth - Tramline LoopWalking Trail · 7.1 km · nearest point 13 km
- Howth - Black Linn LoopWalking Trail · 8.1 km · nearest point 13 km
Outdoors, towns and places to stay
- Donabate, Balcarrick BeachBeaches · 4.2 km · Excellent Quality (2025)
- Portrane, the Brook BeachBeaches · 4.9 km · Good Quality (2025)
- Rogerstown Estuary Nature ReserveNature reserves · 3.8 km
- Baldoyle Estuary Nature ReserveNature reserves · 9.7 km
- Georgian TownhouseHistoric stays · 16 km
- Merrion MewsHistoric stays · 17 km
Other attractions nearby
- Lambay Nature Walking ToursWalking · 3.5 km
- Swords CastleHistoric Houses and Castle · 3.8 km
- Wild Fowl ReservesNature and Wildlife · 3.8 km
- Casino Model Railway MuseumMuseums and Attraction · 3.8 km
What's on nearby
- ON ICE Swords2026-11-05 · 4.2 km
- Scummy Mummies - Hot Mess2026-11-05 · 12 km
- Festive Afternoon Tea at the Old Music Shop2026-11-05 · 15 km
Excavations nearby
- 01E1074 Site 2 Lissenhall Little, County DublinRoad-scheme excavation report (TII) · 1.9 km
- 01E0831 Site 3 Staffordstown, County DublinRoad-scheme excavation report (TII) · 2.0 km


