Spain, Andalucia, Cadiz, Cathedral seen from the seafront.

Spain, Andalucia, Cadiz, Cathedral seen from the seafront.

Erosion, Excavator moving shingle into banks to prevent beach erosion.

Erosion, Excavator moving shingle into banks to prevent beach erosion.

Ireland, County Sligo, Dunmoran shoreline with Ben Bulben in the background.

Ireland, County Kerry, Iveragh Peninsula, The Kerry Cliffs on the Skellig Ring near Portmagee.

Ireland, County Kerry, Valentia Island, View towards Dingle Peninsula from Geokaun Mountain Park with Fogher Cliffs in foreground.

Ireland, County Kerry, Valentia Island, View towards the Dingle Peninsula from Geokaun Mountain Park with Radio Station in foreground.

Ireland, County Kerry, Valentia Island, View towards the Iveragh Peninsula from Geokaun Mountain Park with Valentia Island Lighthouse on left.

Austria, Salzburg, Hellbrunn Palace Gardens, The Neptune Grotto.

Greece, Santorini, Oia, Overlooking the clifftop town.

Greece, Santorini, Oia, Agios Spiridonas Church in front, and Anastasi Church behind.