Ancient Monuments

History on the Ground

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Castell Bryn-Gwyn

A Scheduled Monument in Llanidan, Isle of Anglesey (Ynys Môn)

« Monument Details

Monument location is shown with schedule boundary polygons where available, otherwise marked as a point on the map which approximates to the centre of the monument.


Latitude: 53.1784 / 53°10'42"N

Longitude: -4.298 / 4°17'52"W

OS Eastings: 246523

OS Northings: 367052

OS Grid: SH465670

Mapcode National: GBR 5H.3LG7

Mapcode Global: WH436.YCJQ

Entry Name: Castell Bryn-Gwyn

Scheduled Date:

Source: Cadw

Source ID: 2511

Cadw Legacy ID: AN015

Schedule Class: Religious, Ritual and Funerary

Category: Henge

Period: Prehistoric

County: Isle of Anglesey (Ynys Môn)

Community: Llanidan is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.