Ice cornice avalanche at Neko Harbor, western side of the Antarctic Peninsula, Antarctica, Polar Regions

Ice cornice avalanche at Neko Harbor, western side of the Antarctic Peninsula, Antarctica, Polar Regions

A snow cornice on mountain peaks near Charcot Island, Bellingshausen Sea, Antarctica, Polar Regions

Sunlight on Neoclassical architecture of a building in Colonial Quito, Ecuador, South America

Mountain peaks on Joinville Island just off the Antarctic Peninsularwith members from an expedition cruise ship. The peninsular is one of the fastest warming places on the planet.

Silver birch, Betula pendula, above a snow cornice, Tartumaa, Estonia

A banded adult Adelie penguin (Pygoscelis adeliae) watches as a gentoo penguin approaches an ice cornice on Barrentos Island in the Aitcho Island Group, South Shetland Islands, Antarctica

Climbers ascend Helvellyn from Striding Edge in the Lake District National Park, Cumbria, England, United Kingdom, Europe

A woman walking on Crinkle Crags in the Lake District National Park, Cumbria, England, United Kingdom, Europe

freeride skier jumping over snow cornice, Zugspitze, Hochwanner and Gatterl in the background, Upper Bavaria, Germany

Cornices and snow-covered fir trees with backcountry skiier at Schildenstein, Bavarian alps, Tegernsee, Upper Bavaria, Bavaria, Germany

Hikers on cornice, Werdenfelser Land, Bavaria, Germany

Hikers on cornice, Werdenfelser Land, Bavaria, Germany

Hikers on cornice, Werdenfelser Land, Bavaria, Germany

Snow cornice with blue sky and star-shaped sun, Chur, Graubuenden, Switzerland, Europe

Snow cornice with a star-shaped sun in front of a mountain panorama, Rietzler, Kleinwalsertal, Vorarlberg, Austria, Europe

A man performs a back flip off a cornice while skiing off-piste near St. Anton am Arleberg, Austria.

Telemark skier Art Pearce descends a backcountry slope near the Black Tusk peak in Garibaldi Provincial Park, near Whistler.

A man jumps off cornice while skiing in St. Anton am Arlberg, Austria.

A skier catches air off a cornice at the Grand Targhee ski area, Alta, Wyoming.

A snowmobiler jumping off a cornice on a sunny winter day in Cooke City, Montana.

Three Men Jumping Off A Snow Cornice Near Whitefish, Montana, Usa

Close-up view of the columns of The Parthenon against a blue, cloudy sky with a sunburst at twilight on the Acropolis of Athens, an ancient citadel located on a rocky outcrop above the City of Athens, Athens, Greece

Little Hagia Sophia interior, Istanbul, Turkey

Ornate interior of Santa Maria Maggiore Catholic Church in Rome, Italy, Rome, Italy

Hills Of Athens Seen Behind Erechtheion Caryatid, Athens, Attica, Greece

Facade of a residential building with ornate balconies and corbels, Syracuse, Sicily, Ortigia, Italy

Facade of a residential building with balconies and blossoming plants, Syracuse, Sicily, Ortigia, Italy

Pantages Playhouse, National Historic Site of Canada, Winnipeg, Manitoba, Canada

India, Uttar Pradesh, Agra, Itmad-ud-Daula's Tomb or Baby Taj, India, Uttar Pradesh, Agra