Last year, more than 7000 cities and towns around the world join in the big switch off as part of the annual green campaign Earth Hour organised by the World Wide Fund for Nature (WWF) to raise awareness of climate change and other environmental causes.

World centres like Shanghai and Sydney were among the first to plunge into total darkness, then followed by Britain, France, New York City and Las Vegas – all flipped the switch for a good cause.

Shanghai World Financial Center, Shanghai Tower and Jin Mao Tower in the city's central financial district of Shanghai

Berlin's Brandenberg Gate

Buda Palace of Budapest, Hungary

Buddhist Temple, Bangkok

Cathedral in Cologne, Germany

Eiffel Tower, Paris

Empire State Building, New York

Florence's Duomo, Italy

India Gate, New Delhi

Petronas Twin Towers, Kuala Lumpur, Malaysia

London, UK

London Tower Bridge, UK

Moscow, Russia

Parthenon Temple, Acropolis Hill

St. Peter's Basilica in Rome

St. Mark's Square, Venice

The Azadi Tower, Tehran, Iran

Tokyo Tower, Japan

West Lake in Hangzhou City, China

Join the movement this:

28th March 2015 (Saturday)

8.30pm [Malaysia Time]

 (Content and images source: Daily Mail)