Karst mountains in Guilin and Lijiang River National Park, China (© Sean Pavone/Alamy)

Cypress trees in autumn, Georgia (© Chris Moore/Tandem Stills + Motion)

Hoffmann’s two-toed sloth mother and young, Puerto Viejo de Talamanca, Costa Rica (© Suzi Eszterhas/Minden Pictures)

Thuringian Forest in autumn with Wartburg Castle, Germany (© ezypix/Getty Images)

Guggenheim Museum Bilbao, Spain (© Jeremy Horner/Getty Images)

Long-eared owl in the Bohemian-Moravian Highlands of the Czech Republic (© Ondrej Prosicky/Alamy)

Prince Christian Sound in southern Greenland (© Posnov/Getty Images)

Naqsh-e Rostam archaeological site near Persepolis, Iran (© mshirani/Shutterstock)

Waterfall on the Río Arazas in Ordesa y Monte Perdido National Park, Pyrenees, Spain (© David Santiago Garcia/Cavan Images)

Bull and female moose in Denali National Park, Alaska (© Yva Momatiuk and John Eastcott/Minden Pictures)