Old stone walled fort on hillside with turret on rocky shoreline along the sea with blue sky and clouds; Plevenon, Brittany, France PacificStock
Dark straight cliffs with waves crashing into the rock with ruined castle turret in background; Ballybunion, County Kerry, Ireland PacificStock
Watercolour painting of Beautiful medieval castle and moat at sunrise with mist over moat and sunlight behind castle Matthew Gibson
Stone castle with turret, manicured grass, gardens, fountain, blue sky and clouds; County Clare, Ireland PacificStock
Battleship USS Wisconsin fires a round from one of the Mark 7 16-inch-50-caliber guns. StocktrekImages