Darwin's Arch with Darwin Island in background, Galápagos, Ecuador

'Go' by Kehinde Wiley, displayed inside Moynihan Train Hall at New York City's Penn Station

The Old City of Bern, Switzerland

The Ceremony Hall of Icehotel in Jukkasjarvi, Sweden

Rock art near Santa Fe, New Mexico

Rideau Canal Skateway during Winterlude in Ottawa, Canada

Winter in Oymyakon, Russia

Monarch butterflies in the Monarch Butterfly Biosphere Reserve, Angangueo, Mexico

Big Air Shougang venue in Shijingshan District, Beijing, China

Corjuem Fort in Goa, India

Alpine marmot in Hohe Tauern National Park, Austria

The 369th Infantry returns to New York City, 1919

Workers sorting incense in the Huyện Ứng Hòa district of Hanoi, Vietnam

Halo around the sun in the Ore Mountains, Saxony, Germany

Symmetrical brain coral on a reef in the Caribbean Sea near Grand Cayman, Cayman Islands

Short-eared owl hunting at dusk in Worlaby Carrs, Lincolnshire, England

Bluespotted ribbontail ray near Perth, Australia

Mehrangarh Fort in Jodhpur, Rajasthan, India

Tŵr Mawr lighthouse on Llanddwyn Island, Anglesey, Wales

Lower Manhattan in New York City