Antoni Gaudi's La Sagrada Familia in Barcelona with its lights on and after being turned off to mark Earth Hour
St Sava church before and during Earth Hour in Belgrade, Serbia
Berlin's Brandenburg Gate before and during Earth Hour
and after the lights were turned off
The historic Citadel of Saladin in Cairo is seen before Earth Hour
and during Earth Hour
The Golden Gate Bridge in San Francisco before
The Victoria harbour waterfront in Hong Kong before and during Earth Hour
Jakarta's main business district before and during Earth Hour
and during Earth Hour
Malaysia's landmark Patronas Twin Towers shortly before the lights were switched off for Earth Hour in Kuala Lumpur
and after the lights were turned off
The Las Vegas Strip seen before Earth Hour
and while the lights were switched off for one hour to mark Earth Hour 2010
The Houses of Parliament in London are seen before Earth Hour
The Eiffel Tower in Paris before and during Earth Hour
The Bund on the banks of the Huangpu River before and during Earth Hour in Shanghai
Luna Park in Sydney
The Tokyo Tower before and during Earth Hour
