Lindarbakki turf house at Bakkagerdi, Borgarfjordur eystri North East area, Iceland, Polar Regions

Storm approaches, autumn (fall) leaves cover the ground, Mormon Row barn, Grand Teton National Park, Wyoming, United States of America, North America

Morning sunbeams and early morning fog cover the Cheshire Plain at sunrise, from Bosley Cloud, Cheshire, England, United Kingdom, Europe

Rocks covered with lichen, Deer Park, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Cloud Cover below Teide National Park Area, Tenerife, Canary Islands, Spain

Cloud-covered mountains near Hornsund, Svalbard Islands, Arctic, Norway, Europe

Views from the Bergen Railway route from Myrdal to the town of Flam, Norway, Scandinavia, Europe

Sierra del Rosario Biosphere Reserve, Artemisa Province, Cuba, West Indies, Caribbean, Central America

Arctic birds on an Iceberg on Belcher island, Devon island, Nunavut, Canadian Arctic, Canada, North America

View of the potato patch on Tristan da Cunha, the most remote inhabited location on Earth, Tristan da Cunha, South Atlantic Ocean

View of the potato patch on Tristan da Cunha, the most remote inhabited location on Earth, Tristan da Cunha, South Atlantic Ocean

Aioi Bridge crossing the Motoyasu River in the center of Hiroshima, Honshu, Japan, Asia

Lake Sandoval, Tambopata National Reserve, Puerto Maldonado, Madre de Dios, Peru, South America

Hiking path in the ashes of Mount Fuji in a fog cloud, Honshu, Japan, Asia

Hiking path in the ashes of Mount Fuji in a fog cloud, Honshu, Japan, Asia

Dramatic rocky mountain ridge of the Sierra Nevada, with Cerro del Caballo against the sun, Andalusia, Spain, Europe

Transamerica Pyramid and city, San Francisco, California, United States of America, North America

Overhanging rock on Watchman trail, Zion National Park, Utah, United States of America, North America

Hiker on path along levada (aqueduct) of Green Cauldron (Caldeirao Verde), Madeira island, Atlantic Ocean, Portugal

Pluri-centenarian laurel trees around Fanal, Paul da Serra plateau, Madeira island, Atlantic Ocean, Portugal

Manhattan, Lower Manhattan and World Trade Center, Freedom Tower in New York across Hudson River from Harismus Cover, Newport, New Jersey, United States of America, North America

Giornico village on the Ticino River, Canton Ticino, Switzerland

Lago dei Piani inferiore, Three Peaks Nature Park, Dolomites, South Tyrol (Alto Adige), Italy

Hikers in mist near the refuge Lavaredo, Three Peaks Nature Park, Dolomites, South Tyrol (Alto Adige), Italy

Atlantic surf at Mosteiros, north west coast, Sao Miguel, Azores Islands, Atlantic, Portugal

Twin Erratic boulders high above Nant Ffrancon valley, Snowdonia National Park (Eryri), North Wales, United Kingdom

View of snow covered Aosta Valley from Pavillon du Mont Frety in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

View of the Polychrome Mountains from lookout point on the park road inside Denali National Park and Preserve, Alaska, United States of America

Main Police Station, Havana Old Town, Havana, Cuba

Morning mist over the North York Moors National Park, North Yorkshire, England, United Kingdom

The steep cliffs of Nazare, Oeste, Portugal, Europe

View over the mountainous scenery around Andalsnes, More og Romsdal, Norway, Scandinavia, Europe

View over Romsdalsfjord, Andalsnes, More og Romsdal, Norway, Scandinavia, Europe

View over Nuuk, capital of Greenland, Denmark, Polar Regions

Dunes harbour, Devon island, Nunavut, Canadian Arctic, Canada, North America

Elevated view of Cusco (Cuzco) city, Cusco Province, Cusco Region, Peru, South America

Aerial view over city including Basilique du Sacre-Coeur, Paris, France

View from Porte de Hal, Brussels, Belgium, Europe

A granite boulder beside a hawthorn tree (Crataegus monogyna), on Bench Tor, near Holne, Dartmoor National Park, Devon, England, United Kingdom, Europe

Skyline of Singapore Marina Bay at night with Marina Bay Sands and Art Science museum reflecting in a pond after rain, Singapore

View over Colombo from the Lotus Tower, Colombo, Sri Lanka

Zermatt, Canton Valais, Switzerland

Bay of Clifden at low tide, Connemara, County Galway, Connacht, Republic of Ireland

Avocado plantation, Cocora Valley, around Solento, department of Quindio, Colombia, South America

View over the Carrera 15 at the intersection with the Park Virrey, Zona Rosa area, Bogota, Colombia, South America

The Volcano Route, La Palma, Canary Islands, Spain, Atlantic Ocean, Europe

Wooden church in Ilulissat, Western Greenland, Denmark, Polar Regions

Floating icebergs in the Nuuk Icefjord, Western Greenland, Denmark, Polar Regions

Monte Rosa, Dufourspitze, Italian Alps, Italy, Europe

Hiking trail in alpine landscape facing Monte Rosa with moraine landscape, Italian Alps, Italy, Europe

Alpine creek flowing through wildflower meadows along the Ptarmigan Cirque Trail in summer, Mount Arethusa, Kananaskis Country, Alberta, Canadian Rockies, Canada, North America

View from the trail of Diana's Peak National Park on Saint Helena, South Atlantic Ocean

View of the city skyline with a dramatic sky, looking at Harukas 300 Observatory and Park of the Castle, Osaka, Honshu, Japan, Asia

Mountains in Sacred Valley as seen from Huayllabamba viewpoint, Sacred Valley, Urubamba Province, Cusco Region, Peru, South America

Peaks of Pico do Arieiro at sunset, Funchal, Madeira region, Portugal, Atlantic, Europe

Tourists at the Great Pyramids complex, UNESCO World Heritage Site, Giza, Egypt, North Africa, Africa

Rooftop view over London on a foggy day from St. Paul's Cathedral, London, England, United Kingdom

Monte Cucco at sunset, Gubbio, Umbria, Italy

Semi-arid landscape near Tazert, Al Haouz province, Morocco

View of snow covered Aosta Valley and mountains from Pavillon du Mont Frety in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

Views of the glaciers and mountains of Drygalski Fjord on the southeast side of South Georgia, Southern Ocean, Polar Regions

Moss covered rocks at water's edge, Prince William Sound, Alaska, United States of America, North America

View from Table Mountain, Cape Town, Western Cape Province, South Africa, Africa

Tropical Island of Motu Taakoka covered in palm trees in Muri Lagoon, Rarotonga, Cook Islands, South Pacific, Pacific

Sunset on Catinaccio mountain in the Dolomites and cloud cover, Trentino-Alto Adige, Italy, Europe

New York skyline of Manhattan, Lower Manhattan and World Trade Center, Freedom Tower across Hudson River from Harismus Cover, Newport, New Jersey, United States of America, North America

View of reflections of the Wilder Kaiser Mountains in Schwarzsee, Kitzbuhel, Austrian Tyrol, Austria, Europe

Storm clouds in cloud formation above ploughed field in springtime in Swinbrook in the Cotswolds, Oxfordshire, UK

Cloud formation Cumulus, Towering Cumulus (centre) and Cumulonimbus above agricultural land at Swinbrook in the Cotswolds, UK

Hawthorn trees in Welsh landscape in Snowdonia National Park at Lake Llyn Gwynant, Gwynedd, Wales

Rainstorm from Cumulonimbus cloud above Asthall Village in springtime in the Cotswolds, Oxfordshire, UK

Cloud formation Towering Cumulus (left) Cumulonimbus (right) and Cirrus at high altitude at Swinbrook in the Cotswolds, UK

Cloud formation Towering Cumulus (centre) Cumulonimbus (left) and Cirrus at high altitude (right) at Swinbrook in the Cotswolds, UK

Cloud formation Cumulonimbus with Cirrus high above top left over agricultural land in Swinbrook in the Cotswolds, Oxfordshire, UK

Machu Picchu ruins of Inca citadel in Peru, South America

Llama, Machu Picchu ruins of the Inca citadel discovered in 1911 in Peru, South America

View of The Urubamba Valley from Machu Picchu ruins of Inca citadel in Peru, South America

A crop covered in rows of plastic sheeting in a field on the Furnes peninsular, South Cumbria, UK.

Kenya. Sunset landscape with trees and mount kilimanjaro in background. Moon added as photo composite. Amboseli national park

A crop covered in rows of plastic sheeting in a field on the Furnes peninsular, South Cumbria, UK.

Vernadsky Research Base (Akademik Vernadsky), Ukrainian Antarctic Station at Marina Point on Galindez Island in the Argentine Islands, Antarctica

Misty cloud shrouded mountain peak on Baranof Island in Southeast Alaska in the late springtime, USA, Pacific Ocean.

Aerial views of snow-capped mountains, ice fields, and glaciers on a commercial flight from Juneau to Anchorage Alaska, USA, Pacific Ocean

Short-beaked common dolphin (Delphinus delphis) bow-riding with reflected cloud cover in the calm waters surrounding the Canary Islands off the coast of Africa. North Atlantic Ocean.

Aerial views of snow-capped mountains, ice fields, and glaciers on a commercial flight from Juneau to Anchorage Alaska, USA, Pacific Ocean

Aerial views of snow-capped mountains, ice fields, and glaciers on a charter flight from Santiago, Chile to Ushuaia, Argentina

Aerial views of snow-capped mountains, ice fields, and glaciers on a commercial flight from Juneau to Anchorage Alaska, USA, Pacific Ocean

Mountain Scenic. Everest Trail, Nepal.

Aerial views of snow-capped mountains, ice fields, and glaciers on a charter flight from Santiago, Chile to Ushuaia, Argentina

Aerial views of snow-capped mountains, ice fields, and glaciers on a charter flight from Santiago, Chile to Ushuaia, Argentina

Everest Trail Scenic. Mountains, Prayer Flags, Stone prayer carvings.

The Lindblad Expeditions ship National Geographic Explorer pushes through ice in Crystal Sound, south of the Antarctic Circle, Antarctica, Southern Ocean

Aerial views of snow-capped mountains, ice fields, and glaciers on a charter flight from Santiago, Chile to Ushuaia, Argentina

Aerial views of snow-capped mountains, ice fields, and glaciers on a commercial flight from Juneau to Anchorage Alaska, USA, Pacific Ocean

Aerial views of snow-capped mountains, ice fields, and glaciers on a charter flight from Santiago, Chile to Ushuaia, Argentina

Neko Harbour is an inlet on the Antarctic Peninsula on Andvord Bay, situated on the west coast of Graham Land, Antarctica, Southern Ocean

Adult emperor penguin (Aptenodytes forsteri) on sea ice near Snow Hill Island in the Weddell Sea, Antarctica.

Everest Trail Scenic. Mountains, Prayer Flags, Stone prayer carvings.

American bison (Bison bison) grazing in front of Grand Teton mountain range, Wyoming, USA

The Lindblad Expeditions ship National Geographic Explorer pushes through ice in Crystal Sound, south of the Antarctic Circle, Antarctica, Southern Ocean