Santo Toribio monastery door, Liebana, Cantabria, Spain, Europe

In the 13th century, the golden age of the mongol empire, a sport resembling polo became a training game for the mongolian cavalry throughout high asia. horsemen learned to bend low at speed, like acrobats to finish off fallen enemies with sabres, looting their prey on the ground by scooping up jewels that caught their eye. there are stories, too, of genghis khan knocking about an enemys head as if it were a ball. orkhon valley, central mongolia

Greece, Cyclades, Santorini Island, Man Knocking A Green Door At A House In Ia Village Overlooking The Sea

Construction site - Palast der Republik building in East Berlin, former GDR, the Berlin Cathedral (left) and telecommunications tower in the background, Berlin, Germany, Europe

Construction site - Palast der Republik building in East Berlin, former GDR, and the Berlin Cathedral (left), Berlin, Germany, Europe

Doorknocker of a noble house , Cirauqui , Navarre , Way of St. James , Spain , Europe

Demolition of a house, large mechanical digger, North Rhine-Westphalia, Germany, Europe

Aerial view, Schacht Westfalen mine in Heessen, demolition, Ahlen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Demolition works with a digger, dismantling of a building, demolition of a house

Common kingfisher (Alcedo atthis), male knocks a fish, Hesse, Germany, Europe

House entrance with mint-coloured door with blue wall, blue-green door with knocking ring, green door with knocking ring, Blue City, Chefchaouen, Tangier-Tetouan-Al Hoceima, Morocco, Africa

Woman knocks open the hard kernels of the argan nut with the help of two stones, Morocco, Africa

Old door opener at an old Gate

Demolition of an office building with demolition excavators, downtown Karlsruhe, Baden-Wuerttemberg, Germany, Europe

Demolition of the Dortmunder Thier Brauerei brewery, disused sinced 1996, in the inner city of Dortmund, North Rhine-Westphalia, Germany, Europe

Demolition area, urban redevelopment, Shanghai, China, Asia

American flag in front of a demolished house, Cologne, North Rhine-Westphalia, Germany, Europe