On the quay wall at Abercastle there is a slate plaque marking the spot where, on 12 August 1876, a Danish-born fisherman called Alfred Johnson stepped ashore. He had spent 66 days sailing single-handed from Gloucester, Massachusetts, in a 20-foot dory named Centennial, surviving a gale that capsized the boat along the way. It was the first solo crossing of the Atlantic. His grandson, Charlie Dickman, unveiled the plaque in 2003.
The harbour faces north-west, which is the whole point of it — sheltered from the south-westerly gales that hammer the rest of this coast, giving the fishing fleet somewhere safe to sit. At the mouth of the bay is Ynys y Castell, a craggy 26-metre islet crowned by an Iron Age promontory fort. The village takes its name from it. At low tide you can cross to the island on a rock causeway, past a sea cave on its southern side.
Abercastle is small in the way that requires definitions. There is no pub, no shop, and no church. What there is: a working harbour, the ruins of 19th-century lime kilns, a three-storey stone granary standing empty above the water, and steep wooded valleys running inland. The old Welsh name, Cwm Badau, means Bay of Boats.
In the 19th century this was a trading harbour, shipping slate, grain, limestone, butter, honey and coal out to Bristol and Liverpool, and burning imported limestone and coal in those kilns.
The Pembrokeshire Coast Path runs straight through the village, all 186 miles of it. Half a mile west you reach Carreg Samson, a 5,000-year-old Neolithic burial chamber whose capstone — 4.7 metres of it — rests on three upright stones. Local legend says St Samson of Dol set it in place with his little finger. The longer walk is the circular to Abermawr, about 5.7 miles, passing the granary ruin, the lime kilns, and the earthworks of a railway Brunel started and abandoned.
For a pub you go to Trefin, a mile away, where the Ship Inn has traded since 1797 and stayed in the same family, the Maddocks, for over 200 years. It runs Wednesday Pizza Night, Friday Fresh Fish Night at half price, and Saturday Steak Night using Welsh beef from Gwaun Valley Meats, with three changing real ales and Welsh ciders including Gwynt y Ddraig. Reviewers call it "a really friendly little pub with a lovely welcoming atmosphere." Three miles on at Porthgain, the Sloop Inn has been going since 1743 and serves crab and lobster landed locally.
Two miles inland at Tregwynt, a woollen mill still warps its looms and ties its knots by hand. A mill has stood on the site since the 17th century; the present owner's grandfather bought it in 1912 for £760. It became employee-owned in 2022. There's a café.
There is no station. You reach the village off the A487 via Trefin or Mathry, and parking is free for the few cars that fit; buses are the 413 to Trefin and, in season, the hail-and-ride Strumble Shuttle.
On a calm day the bay fills with kayaks, swimmers, and the boats of the Abercastle Boat Owners Association, working the same sheltered water that made the harbour worth building in the first place.