Greece, Attica, Athens, Evzones Greek soldiers on parade outside the Parliament building.

Greece, Attica, Athens, Evzones Greek soldiers on parade outside the Parliament building.

Greece, Attica, Athens, Evzones Greek soldiers on parade outside the Parliament building.

Greece, Attica, Athens, Evzones Greek soldiers on parade outside the Parliament building.

Ireland, County Clare, Doonagore Castle which is a 16th century tower house above Doolin village.

Northern Ireland, County Fermanagh, Enniskillen Castle.

Ireland, County Donegal, Inishowen, Fort Dunree, Doorway of abandoned military barracks.

Ireland, County Donegal, Inishowen, Fort Dunree, restored red gun.

Ireland, County Donegal, Donegal town, Donegal Castle, Main Hall.

Ireland, County Donegal, Donegal town, Donegal Castle, Main Hall.

England, Kent, Denge, 20ft and 30ft Experimental Sound Mirrors built in 1928 and 1930, precursor to RADAR, at Greatstone.

England, Kent, Denge, 20ft and 30ft Experimental Sound Mirrors built in 1928 and 1930, precursor to RADAR, at Greatstone.