- Trwyn Du Lighthouse is in Anglesey, Wales.
- Check access, weather and local guidance before travelling.
About Trwyn Du Lighthouse
Trwyn Du Lighthouse, also known as Penmon Lighthouse, is a black-and-white striped tower standing on a tidal island at the eastern tip of Anglesey. It marks the narrow passage between Anglesey and Puffin Island and remains an operational Trinity House light.
The story of Trwyn Du Lighthouse
The lighthouse was built in 1838 by the Mersey Docks and Harbour Board engineer James Walker to replace an earlier unlit beacon, following a wreck on the rocks that claimed many lives. A bell was installed to provide a fog signal, one of the first such warning devices in British waters. The light was transferred to Trinity House in 1970, automated in 1982 and converted to solar power in 2000, with the original fog bell still in service.
Visiting with care
The lighthouse can be viewed from the Penmon Point car park at the end of the Anglesey coast road — a toll applies for the private road. A café at the point overlooks Puffin Island, and boat trips from Beaumaris offer closer views of the tower and the island's seabird colonies.
Interesting facts
- Built in 1838 by James Walker to mark the Penmon to Puffin Island passage.
- Its fog bell is one of the oldest working fog signals in Britain.
- Automated in 1982 and converted to solar power in 2000.
- The toll road to Penmon Point passes a medieval priory on the way.
Getting there
Parking and access details — check locally for the latest information.




