usi On Thursday, 1 April 2010
Saturday March 28, 2009, Many countries observed Earth Hour by dimming lights:


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