Earth Hour 2017. See how major cities switched off

In an effort to draw attention to protecting the planet and raise awareness about climate change, Earth Hour was celebrated on Saturday from 8.30 pm to 9.30 pm local time across the world. This year marked the 10th anniversary of the event, which saw millions of people plunging into darkness for an hour. People from 7,000 cities in 172 countries participated in the event, reported news agency Reuters.