South Stack

The lighthouse at South Stack is one of the most exciting visits to a lighthouse available in the UK. (Photo: Ken Trethewey, 2014)

It is approached by a steep, windy staircase of some 400 steps. Including the 100 steps in the tower of the lighthouse, a visitor to this lighthouse covers over 1,000 steps! (Photo: Ken Trethewey, 2014)

This image shows the view from the courtyard of the lighthouse. (Photo: Ken Trethewey, 2014)

The courtyard. (Photo: Ken Trethewey, 2014)

The courtyard. (Photo: Ken Trethewey, 2014)

Over the garden wall. (Photo: Ken Trethewey, 2014)

One of the early outbuildings. (Photo: Ken Trethewey, 2014)

Looking back along the cliffs towards North Stack fog signal station. (Photo: Ken Trethewey, 2014)

A view looking up the inside of the tower. (Photo: Ken Trethewey, 2014)

A view looking down the inside of the tower. (Photo: Ken Trethewey, 2014)

A view of the optic. (Photo: Ken Trethewey, 2014)

A view from inside the lantern. (Photo: Ken Trethewey, 2014)

The lighthouse is built on Holy Island, access to which is by means of a steel bridge. (Photo: Ken Trethewey, 2014)

The access bridge. (Photo: Ken Trethewey, 2014)

The fog signal is located in front of the tower. (Photo: Ken Trethewey, 2014)

(Photo: Ken Trethewey, 2014)