Marie Lochman / Karri (Eucalyptus diversicolor), third tallest tree in the world, Western Australian endemic plant, D'Entrecasteaux National Park, April 2017

Nick Garbutt / The view at night from 'At the Top', 124th floor of the Burj Khalifa, the world's tallest building at 829.8m at night. Dubai, United Arab Emirates. April 2013

Nick Garbutt / Greater Flamingos (Phoenicopterus roseus) feeding in lake at sunrise at Ras Al Khor Wildlife Sanctuary (Ramsar site), with the Dubai skyline in the background and the first rays of the sun catching th...

Enrique Lopez-Tapia / Trango towers in fog, the world's tallest cliffs, Baltoro Glacier, Baltistan, part of the Gilgit-Baltistan territory, northern Pakistan. July 2007.

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

Mark MacEwen / View from Burj Kalifa, the world's tallest building, Dubai at sunrise. United Arab Emirates (UAE) January 2010. No release available.

Mark MacEwen / Dubai aerial view from Burj Al Arab with tallest building in the world the 'Burj Khalifa' along with Dubai skyline, United Arab Emirates, January 2010. No release available.

Mark Brownlow / Angel Falls, world's tallest waterfall, southern Venezuela, South America November 2005, BBC Planet Earth

Michael Hutchinson / Coast Giant redwood trees {Sequoia sempervirens} in the fog, Del Norte State Park, California, USA. Tallest trees in the world.

Tim Fitzharris / 750 foot tall sand dunes, tallest in North America, Great Sand Dunes National Monument, Colorado

Claus Meyer / Aerial view of the Iguacu Falls, Brazil

Jim Brandenburg / Giant Sequoia (Sequoiadendron giganteum) trees with recent dusting of snow, King's Canyon National Park, California