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Castles & ancient sites
Cadw

Llys Rhosyr

The remains of a medieval court of the Welsh princes, just outside Newborough. Free, and the only one of its kind you can visit.

Newborough
·
South & west coast
DirectionsBook or visit websiteCallShare
Price
Free
Time needed
Under an hour
Sat nav
LL61 6SG
Local tip
Combine it with Newborough Forest and Llanddwyn for a full day.

Llys Rhosyr was one of the royal courts of the princes of Gwynedd, used by Llywelyn the Great in the 13th century. Its stone foundations were buried in sand for centuries and only uncovered by excavation. It is the only court of the Welsh princes with visible remains that the public can visit.

Good to know

Free to visit at any reasonable time in daylight. It is a short walk from the Church Street car park in Newborough. Dogs on short leads are welcome.

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Plan your visit

Where to go
Opening times
Daylight hours, every day
Prices
Booking
Not confirmed
Age suitability
Parking
Public car park on Church Street, Newborough (about 450m walk).
Public transport
Walk
Step-free access
Partly step-free
Access details
Cadw rates it easy, but surfaces are uneven.
Toilets
Not confirmed
Facilities
Dogs
Welcome on a lead
Dog rules
Dogs on short leads.

Make a day of it

Walks & Coastal Path

Wygyr riverside walk and Cemaes Community Woodland

Gentle village walk in Cemaes along the Afon Wygyr, with benches, red squirrels and the ruins of an old brickworks, plus a 5-acre volunteer-run woodland with a pond.

Attractions & museums

South Stack Lighthouse (Ynys Lawd)

Trinity House’s 1809 lighthouse on its own islet off Holy Island, reached down (and back up) 400+ cliff steps and a bridge. Open weekends 10.30am–4.30pm from 31 October.

Attractions & museums

Beaumaris Courthouse (Llys Biwmares)

A courthouse from 1614 opposite Beaumaris Castle, used as an assize court until 1971 and now a museum run with the gaol by Beaumaris Town Council.

Details last checked
October 8, 2026
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