Overview
Castlemaine’s castle spanned the River Maine on a bridge, controlling the crossing between Norman and Gaelic Kerry, and it’s mostly gone now – finished off by Cromwellian forces in 1652. What survives is a set of stone buttresses and the socket the gate’s pivot turned in, near the modern bridge. The village around it is small, 177 people at the last count, and sits on the N70 at the R561 junction, the point where the south coast of the Dingle Peninsula begins. Most people treat it as a crossroads on the way to Dingle or the Ring of Kerry. The two reasons to actually stop are the harbour, for its birds, and the pub, for its ballad.
The castle and the Wild Colonial Boy
The name – Caisleán na Mainge, “castle of the Maine” – comes from the fortress the Fitzgerald sons of Maurice FitzGerald built in 1215, straddling the river on its bridge. Its best-recorded moment is a siege: in August 1572 Sir John Perrot, Lord President of Munster, laid it down, and a contemporary pen-and-ink map now held by the UK National Archives still shows his camp, the cannon trained on the bridge, and the bogs and woods around. The castle held through a thirteen-month siege during the Nine Years’ War before Cromwellian forces destroyed it in 1652.
The village’s other claim is a song. Jack Duggan, said to be born here, is the “Wild Colonial Boy” of the ballad, a young emigrant turned bushranger in Australia. There’s a statue of him in the village centre, put up in 2019, and Jack Duggan’s Bar on the Tralee road carries his name. The local GAA club is Milltown/Castlemaine, and Castlemaine United plays the soccer.
Castlemaine Harbour and its birds
Just beyond the village, Castlemaine Harbour is a large estuary carrying about every wetland designation going: a Ramsar site (no. 470), a Special Area of Conservation and a Special Protection Area, and a statutory nature reserve. It holds extensive eelgrass beds, Ireland’s largest natural mussel bed, and oyster and clam grounds.
Winter is the time for it. Brent geese, sanderlings, oystercatchers and red-throated divers work the mudflats and salt marsh, best seen early on a falling tide from the dune fringe. The endangered natterjack toad breeds around the margins, otters hunt the channels, and the tidal water is a nursery for salmon, sea trout and lamprey.
The woodland walk
A short drive from the centre, a car park and picnic site sit at the foot of a wooded trail that climbs to almost 200 metres through Sitka spruce, noble fir, larch, birch and ash. Near the top, around Short Mountain Road and Bóthar na gCloch, the trees open onto the harbour basin and out to the Atlantic. It’s well marked and quiet, and steeper than the word “woodland walk” suggests.
Dhu Varren Garden and the Sewing Shed
A few kilometres north at Knockreigh, near Milltown, Dhu Varren Garden – sometimes billed as “Kerry’s Botanical Garden” – holds one of the largest private plant collections in Ireland, from alpines to subtropical shrubs that survive the mild coast. It opens by appointment only; admission is €7 for adults and €4 for children over 10 at the time of writing. Nearby, the Sewing Shed runs half- and full-day textile workshops – thread painting, Celtic-style table runners, rag dolls – if the weather turns and you want something indoors.
Fishing on the River Maine
The River Maine, its tributary the Little Maine, and the spate-fed Brown Flesk hold salmon, sea trout and brown trout. The grilse run peaks in June and sea trout come in July; the Little Maine is mostly brown and sea trout. Local tackle shops can sort licences and point you at the right stretch.
Getting there and practical details
- By car: The village is at the N70/R561 junction, easy to reach from Tralee, Killarney or Dingle. A free car park sits at the harbour, with roadside space near the woodland trail.
- Public transport: Bus Éireann route 279 links Castlemaine with Tralee and Killorglin. Check the current timetable, as it thins out off-season.
- Dogs: Fine on the coastal and woodland walks, but keep them leashed near feeding and roosting birds, roughly November to February.
- Best time: Winter for the birds, June for the salmon run, long summer evenings for the woodland walk.
Time it for a winter afternoon and walk the harbour edge on a low tide: the shellfish beds show, and the geese come in to feed.