Cú Chulainn's Castle — Attraction in The Municipal District of Dundalk

Cú Chulainn’s Castle (Dún Dealgan Motte & Bailey) A small but fascinating site overlooking the fields outside Dundalk, tied to Ireland’s greatest hero, Cú Chulainn.

Practical tip: there’s no parking, so you’ll need to carefully pull in at the roadside. The entrance is by climbing the stone steps built into the wall — not through the farm gate that says No Trespassing.

The ruin itself is actually a Norman motte-and-bailey castle, first built around the 12th century, and later reused in the 18th century when a tower house known as “Byrne’s Folly” was built on the mound. Over time, it became deeply connected with the legends of Cú Chulainn, who was said to have made his home here.

Local folklore adds more colour: in the field beside the mound lies a large stone, believed to have been thrown there by Cú Chulainn in a show of superhuman strength. Stories say the hero could hurl massive boulders as casually as a child throws a ball, and this one is pointed out as proof.

Standing here, you get both sides of the story — the solid earthwork of the Normans, and the epic myth of Ireland’s warrior champion. Quiet, raw, and steeped in layers of history and legend, it’s a rewarding stop for anyone...

Located just off the Castletown Road, Dundalk. No parking sign at entrance but it is possible to park at a housing development just a few metres further up the road on the left hand side.

Vehicular entrance gates are locked. Pedestrian entrance is over a stone stile / steps or slip through a gap on the left hand of the stile.

The stoned walkway winds it's way around the mound to till you reach the castle.

The is no entrance to the castle but it is possible walk around and to read some details about it on a plaque on one of the walls.

Steep walkway, possible for a pushchair.

No toilets,...

Great high ground spot, history ranging from Iron age settlement, with links to Cu Chulainn. Norman motte and bailey to 18th century castle folly of pirate who lit false beacons luring ships ashore. Great views. Entrance needs repaired, not fit for prams, young children, or those with mobility issues. only one parking space, otherwise you need to park in residential estate 100m away. Worth visiting,...