London's top tourist attractions will turn off their lights to mark Earth Hour on Saturday.
Famous illuminated advertisements on Piccadilly Circus, the London Eye, as well as other popular facilities and buildings across the United Kingdom will be plunged into darkness at 20:30 GMT for one hour.
Earth Hour is organized annually on the last Saturday of March by the World Wildlife Fund (WWF). The initiative traces its origin back to Australia in 2007 when businesses and residents in Sydney turned off their lights for one hour to make a statement about energy use and global warming.
Four years later, it is the largest voluntary event in history.
More than 4,000 cities from 131 countries, including Russia's capital, Moscow, and about 750 major landmarks will turn off their lights during the global Earth Hour event on Saturday, the WWF said Friday.
LONDON, March 26 (RIA Novosti)
