On Saturday night, homes, businesses and landmarks around the world turned off their lights for 60 minutes. Earth Hour, which launched in Sydney in 2007, is an annual event intended to draw attention to climate change.

From the Greek Parthenon to France’s Eiffel Tower, iconic buildings went dark between 8.30 p.m. and 9.30 p.m. local time. Earth Hour now takes place in more than 172 countries, and hundreds of community groups shared images of candlelit celebrations on social media.

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Iconic landmarks around the world turn out the lights for Earth Hour 2016