A combination of photos shows the London Eye before (top) and after the lights were switched off during the Earth Hour environment campaign in London, Great Britain. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833911

A combination of photos shows the Palace of Westminster before (top) and after the lights were switched off during the Earth Hour environment campaign in London, Great Britain. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833909

A combination of photos shows "Puerta de Alcala" monument before (top) and after the lights were switched off during the Earth Hour environment campaign in Madrid, Spain. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833903

A combination of photos shows the "Palacio de Cibeles", Madrid town council, before (top) and after the lights were switched off during the Earth Hour environment campaign in Madrid, Spain. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833902

The "Puerta de Alcala" monument is pictured before the lights were switched off during the Earth Hour environment campaign in Madrid, Spain. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833900

The Eiffel Tower is pictured after the lights were switched off during the Earth Hour environment campaign in Paris, France. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833660

A combination of photos shows the Eiffel Tower before (top) and after the lights were switched off during the Earth Hour environment campaign in Paris, France. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833659

The Cathedral of Christ the Saviour is pictured after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833636

Saint Basil's Cathedral is pictured after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833632

Young people hold candles during the Earth Hour environment campaign on Red Square in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833619

The Radisson hotel is pictured after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833610

Young people hold candles during the Earth Hour environment campaign on Red Square in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833593

A combination of photos shows the Kremlin before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833556

A combination of photos shows the Kremlin, the Historical museum and the GUM department store before (top) and after the lights were switched off during the Earth Hour environment campaign on Red Square in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833534

A combination of photos shows the Radisson hotel, left, and the White House before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833529

The House of books is pictured after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833517

A combination of photos shows a Stalin's era skyscraper before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833505

A combination of photos shows the Kul Sharif Mosque before (top) and after the lights were switched off during the Earth Hour environment campaign in Kazan, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833504

A combination of photos shows the Cathedral of the White House before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833494

A combination of photos shows the Kremin before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833463

A combination of photos shows the Kremin before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833459

A combination of photos shows the Cathedral of Christ the Saviour before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833448

A combination of photos shows the Radisson hotel before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833426

A combination of photos shows the White House before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833415

A combination of photos shows the GUM department store before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833403

A combination of photos shows Saint Basil's Cathedral before (top) and after the lights were switched off during the Earth Hour environment campaign in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833389

People light candles to form a "60+" sign during the Earth Hour environment campaign, with Saint Basil's Cathedral seen in the background, on Red Square in Moscow, Russia. Every year people all around the world turn off their lights to support action on climate change.

30.03.2019#5833360