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Between 8 and 9 pm, hundreds of cities in these 35 countries turned off their lights. Even some of the most famous landmarks participated, including the Sydney Opera House, Empire State Building, National Monument in Jakarta, Indonesia, Golden Gate Bridge, the Colosseum in Rome, Azrieli Centre in Tel Aviv, the Royal Castle in Stockholm, the CN Tower in Toronto, SM Science Discovery Centre in Manila, Petronas Towers and the KL Tower in Kuala Lumpur, Wat Arun Temple in Bangkok, and London’s City Hall.

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