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
Battleship USS Wisconsin fires a round from one of the Mark 7 16-inch-50-caliber guns. StocktrekImages
Old stone walled fort on hillside with turret on rocky shoreline along the sea with blue sky and clouds; Plevenon, Brittany, France PacificStock