Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Ireland, County Kerry, Killarney, Old Weir Bridge at the Meeting of the Waters where Killarney's 3 lakes meet.

Ireland, County Kerry, Killarney, Old Weir Bridge at the Meeting of the Waters where Killarney's 3 lakes meet.

Ireland, County Kerry, Killarney, Old Weir Bridge at the Meeting of the Waters where Killarney's 3 lakes meet.

Austria, Tyrol, Innsbruck, Inn river with colourful modern houses and the snow clad Tyrolean Alps on the other side of the river.

Spain, Castile and Leon, Segovia, Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to channel water from springs in the mountains 17 kilometres away to the city'...

Spain, Castile and Leon, Segovia, Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to channel water from springs in the mountains 17 kilometres away to the city'...

Spain, Castile and Leon, Segovia, Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to channel water from springs in the mountains 17 kilometres away to the city'...

Spain, Castile and Leon, Segovia, Early morning golden light on the Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to channel water from springs in the mountai...

Spain, Castile and Leon, Segovia, Hot air balloon gliding past as early morning golden light shines on the Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to ch...

Spain, Castile and Leon, Segovia, Hot air balloon gliding past as early morning golden light shines on the Aqueduct of Segovia, a Roman aqueduct with 167 arches built around the first century AD to ch...