Gavin Hellier / The Burj Khalifa, completed in 2010, the tallest man made structure in the world, Dubai, United Arab Emirates 2011. No release available.

Gerrit Vyn / Liberty Bell Mountain at Washington Pass in the North Cascades, in winter, Okanogan National Forest, Washington, USA, November 2011

Luis Quinta / Mount Pico, volcanic mountain, Pico Island, Azores, March, 2010.

Oriol Alamany / Torres del Paine rock towers, Torres del Paine National Park, Patagonia, Chile

Oriol Alamany / People and an iceberg in Lake Grey with Valle del Frances in the background, Torres del Paine National Park, Patagonia, Chile

Oriol Alamany / Cuernos del Paine at dawn seen from Pehoe lake, Torres del Paine National Park, Patagonia, Chile

Guy Edwardes / Two people silhouetted in front of Skogafoss waterfall in southern Iceland, June 2009

Neil Lucas / Dragons blood tree (Dracena cinnibaris) reflected, Socotra, Yemen, February 2007. Digitally created image

Neil Lucas / Giant bamboo (Cathariostachys) view up into canopy from the forest floor, Kyoto, Japan, February 2008

Inaki Relanzon / Looking up into European Beech (Fagus sylvatica)tree canopy in autumm colours. Ordesa y Monte Perdido National Park, Pyrenees, Aragon, Spain. October 2009

Patricio Robles Gil / Aerial view of Gorely volcano (1,829m) with snow on slopes, Kamchatka, Russia, August 2006

Gavin Hellier / Petronas Towers at night - 88 storey steel clad twin towers with a height of 451.9 metres - the iconic symbol of KLCC (Kuala Lumpar City Centre) urban development complex, Selangor, Malaysia 2008