Oberhofen Castle, Oberhofen, Switzerland

Northern Lights over Tallinn

Geirangerfjorden, Norway ─

The Great Bear Rainforest, British-Colombia

Black Hills, South Dakota

Perito Moreno Glacier

Devetashka Cave, Bulgaria

Mount Damāvand, Iran -

Great Sand Dunes National Park and Preserve

Wadi Al-Hitan or 'whale valley' because of fossils found by scientists, in Egypt.

Small cabin in a forest near the river

First snow of the season today at the Maroon Bells - Aspen, Colorado

A farmer walks past a terrace of codonopsis pilosula, a traditional Chinese medicine also known as dang shen, in Min county, Gansu province