Cannon Ball Concretions in the badlands, Theodore Roosevelt National Park, North Dakota, United States of America, North America

Palais du Prince, Monaco, Cote d'Azur, Mediterranean, Europe

Hispanic girl swimming underwater holding nose

Caucasian girl swimming underwater holding nose

Caucasian girl holding nose jumping off diving board into swimming pool

Old cannon on the Old Fortress in Kerkyra, Corfu

Old guns pointed towards the sea on the roof of Walmer Castle, 1540, Walmer, Deal, Kent, England, United Kingdom, Europe

Historic cannon balls, welded together, Fort Christiansvaert, Christiansted, St. Croix island, U.S. Virgin Islands, United States

Cannon balls, El Morro, Morro Castle, Santiago de Cuba, historic district, Cuba, Caribbean, Central America

Close-up of a cannon and cannon balls, Castillo De San Marcos National Monument, St. Augustine, Florida, USA