Caer LebBrynsiencyn, Anglesey

Caer Leb, Brynsiencyn, Anglesey, North Wales

Caer Leb is an enclosure surrounded by two ditches and banks on the south-western part of Anglesey. It was in use from the Roman period and was once a settlement with roundhouses. It’s a good way to spend a couple of hours, and you can visit nearby Bryn Celli Ddu too and make an afternoon of it.


Caer Leb is a 200ft by 160ft low-lying rectilinear enclosure defined by its distinctive double ditches and banks. As some of the ditches become waterlogged, it has been argued that it was likely to have been a Medieval homestead defended by a moat. Artefacts recovered from the site, including a AD 3rd Century brooch, a denarius Postumus dating from the 200’s AD and various other finds from the Roman era, however, show that the site has been in use for a much longer period of time. In the past, there was a hut circle here and at the site you can see CADW’s digital reconstruction of how the site is thought to have looked in its heyday.

The site is situated on the south-west side of the island of Anglesey, just further along the main A4080 road from Bryn Celli Ddu, a prehistoric burial mound and close to Castell Bryn Gwyn, too. There are some beautiful countryside views surrounding Caer Leb and if you have a passion for British historic monuments then this is worth a visit, especially if you combine it with a visit to Bryn Celli Ddu as you could while away an afternoon and happily fit in a trip to both sites. It has easy access from the road, but the ground does get boggy here, so make sure you’ve got suitable footwear! Like most monuments in CADW’s care, it’s free to enter the site making it a great stop-off that won’t break the bank.

Opening times

Daily: 10am - 4pm and New Year). 

Last admission 30 minutes before closing.

Contact details 



Free parking is a short walk from the ancient settlement.


Sadly the ground surrounding Caer Leb is uneven and therefore isn't suitable for wheelchairs. People with mobility issues are advised caution if visiting as the ground is uneven underfoot. 


Are allowed on leads.


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