Paris, France: Young couple touch their heads together then man takes photograph of female sitting on wall of the Place de Chaillot, with the Eiffel Tower (La Tour Eiffel) and the road running underneath it seen in the background

Paris, France: Couple talking closely to each other leaning on wall at the Place de Chaillot with Eiffel Tower (La Tour Eiffel) behind them, man hugs then kisses woman as tourists walk past

Couples dancing in the open air.

People walking along a pavement in Paris. Can see the back of a couple holding hands as they walk away from camera.

Paris, France: Back view of couple leaning on wall at Place de Chaillot looking at the Eiffel Tower (La Tour Eiffel) in front of them, the woman is leaning her arm on the man as they talk

Paris, France: Close view of couple eating meal having lunch at table of pavement cafe in Saint Michel area of Paris, table has red gingham tablecloth

Kent, England. Long shot of an unidentifiable couple walking a dog through a snow-covered park. Snow-covered trees frame the shot and a lake is visible in the background.

Back view of people along in heavy rain at night, one is wearing a blue cagoule and the other has pulled their outer clothing over their head

Close up of Mountain Gorilla's face, then two Mountain Gorillas hiding heads behind vegetation in a rainforest in Uganda, one is looking at camera.

Kent, England. Swans and signets swimming across a lake surrounded by snow-covered trees.

Kent, England. Ducks and a swan swimming on a pond. Snow-covered trees line the bank in the background.

Kent, England. Two swans swimming on a lake with their signets visible in the background. Snow covers thin branches on the bank.

Back view of two British police officers walking along suburban street as traffic passes along road, policemen are wearing yellow reflective jackets and police hats

Berlin, Germany: Close side view of the head and shoulders of statues of Karl Marx and Friedrich Engels in the Marx-Engels Forum public park with trees in background.