Low-lying cloud over Loch Chon, the Trossachs, Scotland (© Alistair Dick/Alamy)

软木橡树林 (© Andrés M. Domínguez/Minden)

喜马拉雅山脉的钱德拉塔尔湖，印度 (© f9photos/Getty Images Plus)

Chandra Tal lake in the Himalayas, India (© f9photos/Getty Images Plus)

Stepping stones in Tollymore Forest Park, County Down, Northern Ireland (© Chris Curry/500px)

Fleurs de safran, Espagne (© Juan-Carlos Munoz/Minden Pictures)

Blick aus dem herbstlichen Jardin des Tuileries auf den Louvre, Paris, Frankreich (© Brian A. Jackson/Getty Images Plus)

Jardin des Tuileries in autumn, leading to the Louvre Museum in Paris, France (© Brian A. Jackson/Getty Images Plus)

The Brandenburg Gate seen through a heart-shaped replica of the Berlin Wall (© Britta Pedersen/picture alliance via Getty Images)

蓝莓植物上的霜，加拿大新不伦瑞克 (© Freeman Patterson/Masterfile)

阿尔卑斯国家公园豪伊特山上雾中的野花，澳大利亚维多利亚 (© Australian Scenics/Photolibrary/Getty Images Plus)

小刺猬 (© lorenzo104/Getty Images)

Rodrigo Koxa riding the biggest wave ever surfed, on Nov 8, 2017, off the coast of Nazaré, Portugal (© Pedro Cruz/AP Photo)

秋日雾中清晨里的特里斐斯城堡，德国莱茵兰普法尔茨森林 (© Björn Lauer/Getty Images)

Trifels Castle in the Palatinate Forest, Rhineland-Palatinate, Germany (© Björn Lauer/Getty Images)

大雾笼罩下的巴伐利亚阿尔卑斯山脉，德国 (© Anton Petrus/Getty Images)

伏尔塔瓦河上的查理大桥和老城桥塔，捷克布拉格 (© Markus Lange/Offset)

Bridges over the Vltava River, Prague, Czech Republic (© Markus Lange/Offset)

锡安国家公园的秋色，犹他州 (© pabradyphoto/Getty Images)

Fall colors in Zion National Park, Utah (© pabradyphoto/Getty Images)

Gelada monkeys in Simien Mountains National Park, northern Ethiopia (© Marco Gaiotti/plainpicture)

Chon湖上空的低空云，苏格兰特罗萨克斯 (© Alistair Dick/Alamy)

阿查法拉亚盆地中的一棵柏树，路易斯安那州 (© Chris Moore/Tandem Still + Motion)

Papillons Monarques à Michoacán, Mexique (© Sylvain Cordier/Getty Images)

Highland cattle in Drenthe province in the Netherlands (© defotoberg/Shutterstock)

凤凰城天港国际机场鸟瞰图，亚利桑那 (© Nearmap/Getty Images)

Sky Harbor International Airport in Phoenix, Arizona (© Nearmap/Getty Images)

Die Maroon Bells in der Nähe von Aspen, Colorado, USA (© Christopher E. Herbert/Getty Images)

The Maroon Bells, near Aspen, Colorado (© Christopher E. Herbert/Getty Images)

Jemaa el-Fnaa Square in Marrakesh, Morocco (© Pavliha/Getty Images)