More info:
The emblem of Trinity House appears above the door of a former Lighthouse Keeper’s Cottage at Penmon Point on Anglesey.
Trwyn Du Lighthouse is a lighthouse between Dinmor Point near Penmon and Ynys Seriol, or Puffin Island, south east Anglesey, at the north entrance to the Menai Strait (grid reference: SH 6 44815) and marking the passage between the two islands.