Milan Radisics / Tools to chase birds away from airport area at Budapest Airport, including sound cannon, Hungary, March 2009

Florian Möllers / House sparrow (Passer domesticus) breeding in the cannon tube of a tank at the Russian War Monument, Unter den Linden, Berlin, Germany, June 2007

Jeff Rotman / Lifting a cannon during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987. Model released Model released.

Eladio Fernandez / Row of cannons in La Citadelle fortress, UNESCO World Heritage Site, Haiti. August 2016.

Eladio Fernandez / View from one of the fortresses windows into the backyard where all the cannon and mortar balls are stored. La Citadelle, UNESCO World Heritage Site, Haiti, August 2016.

Eladio Fernandez / View of La Citadelle from the backyard with pile of cannon balls UNESCO World Heritage Site, Haiti, August 2016.

Loic Poidevin / Old canon on display outdoors in snow, Museum Raatteetie, Finland

Kirkendall-Spring / Rocky coast known as The Garden, Cannon Beach, Oregon, USA. April 2016.

Pascal Kobeh / A diver above the cannon gun at the bow of the the wreck of the San Francisco Maru, a passenger cargo used as a auxiliary transport vessel, Chuuk or Truk Lagoon, Carolines Islands, Pacific Ocean

Pete Oxford / Tabby house, Cannon's Point, St Simon's Island, Barrier Islands, Georgia, USA.

Steve O. Taylor (GHF) / 17th century British cannons at Bunce Island slave trading fort. Sierra Leone, 2004-2005.

Steve O. Taylor (GHF) / 17th century British cannon at Bunce Island slave trading fort. Sierra Leone, 2004-2005.