The Lick Observatory on Mount Hamilton, near San Jose, California

Skyline of Prague, Czech Republic

Harp seal sleeping at Jones Beach, Long Island, New York

Bonfire to celebrate New Year's Eve in 2014 in Reykjavik, Iceland

Westerheversand Lighthouse in Westerhever, Germany

Mountain goats in the Yukon, Canada

Kjell Henriksen Observatory in Svalbard, Norway

Snow buntings flock during a snowstorm in New York

Royal Pavilion Ice Rink in Brighton, England

Trees on the northern slope of Mount Khomyak in the Carpathian Mountains, Ukraine

Christmas tree at Weissensee, a small lake near Ehrwald in Tyrol, Austria

Two young male polar bears, Churchill, Manitoba, Canada

Winter scene illuminated on the Palais de l'Isle in Annecy, Haute Savoie, France

Sunlight in the forest of Western Siberia, near the city of Raduzhny, Russia

Performers from the Ministry of Fun Santa School in London, England

Aurora borealis above the Brooks Range in Alaska

The December full moon seen through holiday lights

Christmas-themed beach huts in Bournemouth, England

The English National Ballet's 2016 production of 'The Nutcracker' at the London Coliseum in London, England

The chapel and hermitage of Santa Justa in Cantabria, Spain