Neuschwanstein and Hohenschwangau castles, Bavarian Alps, Germany (© Harald Nachtmann/Getty Images)

A mother cheetah and her cubs in the Maasai Mara National Reserve, Kenya (© Scott Davis/Tandem Stills + Motion)

Sandstone rock formations, Vermilion Cliffs National Monument, Arizona (© Yva Momatiuk and John Eastcott/Minden Pictures)

North Gate of Angkor Thom, Angkor Archaeological Park, Cambodia (© Amazing Travel Lifestyle/Shutterstock)