Earth Hour campaign

These pictures show Sydney Harbour Bridge and the Opera House plunged into darkness for the Earth Hour environmental campaign on 24 March 2018. The lights went out on two of Sydney's most famous landmarks for the 11th anniversary of the climate change awareness campaign Earth Hour, among the first landmarks around the world to dim their lights for the event. 

These pictures show Sydney Harbour Bridge and the Opera House plunged into darkness for the Earth Hour environmental campaign on 24 March 2018. The lights went out on two of Sydney's most famous landmarks for the 11th anniversary of the climate change awareness campaign Earth Hour, among the first landmarks around the world to dim their lights for the event.