Ingo Arndt / Cathedral Termite mount, Litchfield National Park, Northern Territory, Australia

Tim Fitzharris / Cathedral Rock at sunset, Coconino National Forest, Arizona

Hougaard Malan / Misty morning in the Drakensberg viewed from behind the Organ Pipes. Cathedral Peak Region, Drakensberg, South Africa. November 2012.

Hougaard Malan / Cathedral rock at sunrise. Pondoland, Eastern Cape, South Africa. June 2012.

Hougaard Malan / Flowering aloes with cathedral rock beyond. Pondoland, Eastern Cape, South Africa. June 2012.

Robin Chittenden / Peregrine falcon (Falco peregrinus) flying past spire, Norwich Cathedral, Norfolk, UK, June.

Robin Chittenden / Peregrine falcon (Falco peregrinus) on statue's head, Norwich Cathedral, Norfolk, UK, June

David Pattyn / Western Red Cedar trees (Thuja plicata) in temperate rainforest. Cathedral grove in MacMillan provincial park, Vancouver Island, British Columbia, Canada, August.

Alex Mustard / Diver explores the cathedral at Silfra Canyon, deep fault filled with fresh water in the rift valley between the Eurasian and American tectonic plates, at Thingvellir National Park, Iceland. May 2011....

Ingo Arndt / Cathedral termite mound, Litchfield National Park, Northern Territory, Australia

Gavin Hellier / Looking down on St. Vitus Cathedral, Charles Bridge, UNESCO World Heritage Site, and the Castle District illuminated at night, Prague, Czech Republic 2011. No release available.

Gavin Hellier / Looking down on St. Vitus Cathedral, Charles Bridge, UNESCO World Heritage Site, and the Castle District, Prague, Czech Republic 2011. No release available.