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Beaumaris Gaol (Carchar Biwmares)

A Victorian county prison in Beaumaris, built in 1829 and closed in 1878, with cells, a condemned cell, a punishment cell and a rare surviving treadwheel.

Beaumaris
·
East coast & Menai
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Price
Price not confirmed
Time needed
1-2 hours
Sat nav
LL58 8EP
Local tip
If the gaol is open, see the castle in the morning and the gaol after lunch – they’re a short walk apart.

Beaumaris Gaol was built in 1829 as Anglesey’s county prison and closed in 1878. Inside you walk dim corridors past bare cells, the condemned cell and the punishment cell, and see one of the last working penal treadwheels in Britain. Displays cover the history of law and order on the island.

Beaumaris Courthouse, opposite the castle, dates from 1614 and is run alongside the gaol (see its own listing).

Good to know

Both are run by Beaumaris Town Council. When we checked on 11 October 2026 the council still hadn’t published opening days or prices, so contact the council before you go.

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Plan your visit

Where to go
On Steeple Lane in Beaumaris town centre.
Opening times
Prices
Booking
Not confirmed
Age suitability
Parking
Pay and display car parks in Beaumaris town centre.
Public transport
Walk
Step-free access
Not confirmed
Access details
Toilets
Not confirmed
Facilities
Dogs
Not confirmed
Dog rules

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 11, 2026
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