London, England: General views of lake in Hyde Park at sunrise including person swimming, swan, and people silhoutted on jetty.

London, UK: Various views of the King's Troop Royal Horse Artillery in ceremonial dress during 41 gun salute at Green Park.

Side shot of a silverback mountain gorilla sits in a forest, picking at leaves to eat, in the Virunga National Park, Democratic Republic of Congo.

A park pathway line with autumnal trees.

Berlin, Germany: Wide general view of the Marx-Engels Forum public park under cloudy sky including back view of the Karl Marx and Friedrich Engels sculpture, tourists and the Fernsehturm TV Tower.

Pan across a rocky stretch of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Green foliage clings to rocks in the foreground.

Greenwich Park, London, UK: Panning shot of a winter snow covered Greenwich Park, showing a London skyline and the Queens House/Naval Museum.

Berlin, Germany: Bronze memorial statue of a male rubble worker wearing flat cap and carrying a pick, remembering the men who cleared up rubble after World War II, next to trees in the Marx-Engels Forum public park.

UK: Various shots fo a flower bed in a park filled with colourful Tulips and Primulas.

Panoramic view across a rocky expanse of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Shadows hug the contours of the sun-soaked rock patterns. Green foliage lines the foreground.

Berlin, Germany: Sequence showing view of tourists taking photgraphs of the sculptures of Karl Marx and Friedrich Engels in the Marx-Engels Forum public park.

A silverback mountain gorilla starts to climb a tree in the Virunga National Park, Democratic Republic of Congo.

Gombe National Park,Tanzania: Baby Chimpanzee next to mother in forest yawns

Pan across a misty, shaded stretch of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Green foliage lines the rocks in the foreground.

London, England, United Kingdom: People relaxing in a park on a spring day. Yellow tulips are blossoming in the park.

Pan across a rocky stretch of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Green foliage lines the foreground.

Zoom out to a panoramic view of the mountainous terrain of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Light snow covers a rock outcrop in the foreground.

A silverback mountain gorilla looks around the surrounding dense vegetation in the Virunga National Park, Democratic Republic of Congo.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, peers around the dense vegetation in which it stands.

A silverback mountain gorilla sitting in dense vegetation in the Virunga National Park, Democratic Republic of Congo. Flies fly around its head.

Panoramic view across a rocky stretch of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Shadows hug the contours of the sun-soaked rock patterns. Green foliage lines the foreground.

Side shot of a silverback mountain gorilla sitting in dense vegetation in the Virunga National Park, Democratic Republic of Congo. Flies fly around its head.

Wide view across a rocky stretch of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Green foliage lines the foreground.

Berlin, Germany: Back view of sculpture of Karl Marx and Friedrich Engels surrounded by tourists in Marx-Engels Forum public park then camera pulls out to show wide view of park and the Fernsehturm TV Tower.

London, England: Air view of the London 2012 Olympic Games park construction site, including the half-built stadium, covered in snow.

Zoom out from a long view of tall buildings, including 30 St Mary Axe (also known as; The Swiss Re Tower, also known as 'The Gherkin') and Tower 42 (also known as The NatWest Tower), in the financial district of London, England, UK to a wide shot of green parkland and leafy trees in Waterlow Park.

Berlin, Germany; Tourists (wearing coats) posing for photographs on the statues of Karl Marx and Friedrich Engels in Marx-Engels Forum public park.

Low angle view of the Roosevelt Arch located at the north entrance to Yellowstone National Park, USA. The archway is silhouetted against the bursting sun.

Kent, England. A group of unidentifiable people pulling a sledge across snow-covered ground. Zoom out to a wide shot of a snow-covered park with a huge snow-laden tree standing in the centre.

Back shot of a silverback mountain gorilla walking into dense vegetation in the Virunga National Park, Democratic Republic of Congo.

London, UK: Slow pan up the trunk of a mature plane tree in a park.

A family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania.

A silverback mountain gorilla hides behind a thick layer of plants in the Virunga National Park, Democratic Republic of Congo.

Zoom out to a panoramic view of the mountainous terrain of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Light snow covers a rock outcrop in the foreground.

Close-up shot of a family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania. The baby chimpanzees are very restless and are pestering their parents. One of the baby chimpanzees is climbing all over its parents and ends up lying on the mother.

A silverback mountain gorilla chews leaves and picks at other plants in the Virunga National Park, Democratic Republic of Congo.

A shy silverback mountain gorilla crawls backwards into dense vegetation in the Virunga National Park, Democratic Republic of Congo.

Berlin, Germany: Camera zooms into show head and shoulders of bronze statue of a Truemmerfrau - a woman who cleared up rubble after World War II - amongst foliage of tree in the Marx-Engels Forum public park.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, picks at leaves and vines and chews them while lying down.

Aerial track across the rocky terrain of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. Shadows cling to the contours of the canyon's sun-drenched rock faces.

Yellowstone National Park, USA: A river plunging down a snow-covered mountainside. Conifers covered in show are growing around the waterfall.

Close up view of a sign reading 'Yellowstone National Park' carved against the Roosevelt Arch located at the north entrance to Yellowstone National Park, USA.

New York, USA: New York City skyline and skyscrapers seen from top of Rockerfeller Centre. PAN to Central Park

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, sits in dense vegetation, scratching its face. It then gets up and wanders off.

South Africa: Wide view of a group of zebras gathered on a road in a game park, zebras walking along grassy plain.

A male eastern chimpanzee walks into a clearing in a forest and sits down, in the Gombe National Park, Tanzania.

Zoom out to a panoramic view of the mountainous terrain of the Grand Canyon in the Grand Canyon National Park, Arizona, USA. The Canyon is cast in a mixture of light and shade.

Pan across rocky peaks shaded by sunlight and shadow in the Grand Canyon in the Grand Canyon National Park, Arizona, USA.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, looks curiously into the camera then hides behind the dense vegetation surrounding it.

Wide shot of leaveless trees in a park. People are seen strolling along footpaths.