Lonely Planet Writer

Lights go out on famous monuments around the world to mark the tenth annual Earth Hour

For the tenth year, lights went out around the world to mark Earth Hour – a worldwide movement organized by the World Wildlife Fund.

Lights go out in Hong Kong for Earth Hour.
Lights go out in Hong Kong for Earth Hour. Image by WWF Hong Kong Facebook

During Earth Hour, people around the world are encouraged to turn out their lights for a designated hour to “shine a light on the climate action our planet needs”, according to organizers.

World Wildlife Fund.
World Wildlife Fund. Image by World Wildlife Fund UK

This year on March 19 from 8:30 to 9:30 pm, the lights went out in 178 countries and territories and more than 400 iconic landmarks dimmed their lights, according to a press release. The lights were turned off at the Eiffel Tower in Paris, the Sydney Opera House, Big Ben and the Houses of Parliament in London, the Tokyo Tower, the Empire State Building in New York and many other well-known sites.

Smithsonian. Image by Smithsonian Natural History Museum Twitter

Earth Hour began in Sydney, Australia in 2007 and has grown into “the world’s largest grassroots movement for the environment”.

Watch a time-lapse video of the lights going out in Hong Kong here.