Spain, Castile, Segovia, Puerta de San Andrés or St Andrew's Gate, part of the city's medieval defensive fortifications.

Ireland, County Waterford, Dungarvan Castle, restored barracks in the courtyard.

Ireland, County Waterford, Dungarvan Castle, entrance gate leading in to the courtyard.

Ireland, County Waterford, Waterford city, Reginalds Tower which was built by the Anglo-Normans after their conquest of Waterford, replacing an earlier Viking fortification.

Ireland, County Waterford, Waterford city, Reginalds Tower which was built by the Anglo-Normans after their conquest of Waterford, replacing an earlier Viking fortification.

Ireland, County Laois, Rock of Dunamase, Ruin of the Barbican entrance gate.

Ireland, County Laois, Rock of Dunamase, Ruin of the Barbican entrance gate.

Fortification built on the end of Hurst Spit at the narrowest point of the Solent, opposite the Isle of Wight guarding the approaches to Southampton Port and Portsmouth harbour. First fort completed i...

Spain, Balearic Islands, Majorca, Palma de Mallorca, Castle Bellver with wedding party taking photos on the steps.

Spain, Balearic Islands, Majorca, Palma de Mallorca, Castle Bellver with wedding party taking photos on the steps.

Spain, Balearic Islands, Majorca, Palma de Mallorca, Castle Bellver with wedding party taking photos on the steps.

Spain, Balearic Islands, Majorca, Palma de Mallorca, Castle Bellver, Stone built Gothic-style fort now a museum and tourist attraction.