Rome, Italy. 25th March 2017. The dome of St. Peter's and the Colosseum with the lights off to celebrate Earth Hour. Earth Hour was celebrated on Saturday from 8:30 to 9:30 pm local time across the world. This year marks the 10th anniversary of this event. Credit: marco iacobucci/Alamy Live News

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Photo credit: © marco iacobucci / Alamy / Afripics
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Keywords: basilic, basilica, city, colosseum, dome, earth, hour, italy, light, lights, peter, peter’, pietro, rome, sain, saint, san, vatican