The Empire State Building looked downright spooky with the lights out for Earth Hour

John Lamparski / Getty Images

The Empire State Building looked downright spooky with the lights out for Earth Hour
(Image credit: John Lamparski / Getty Images)

Every year, iconic buildings around the world turn off their lights for an hour to mark Earth Hour. Now celebrated in some 150 countries, the campaign — which was held Saturday night — aims to raise awareness for local environmental projects and remind people to monitor their own energy usage.

So what did some landmarks look like when plunged into darkness?

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Jon Terbush

Jon Terbush is an associate editor at TheWeek.com covering politics, sports, and other things he finds interesting. He has previously written for Talking Points Memo, Raw Story, and Business Insider.