See how Earth Hour darkened the world’s most famous landmarks in a video

Lights were switched off in places such as the Acropolis in Athens and the Sydney Opera House.

Saturday night’s Earth Hour environmental event eclipsed some of the world’s most famous landmarks and landmarks.

Lights were switched off at the Acropolis in Athens, the Eiffel Tower in Paris, the Empire State Building in New York and the Sydney Opera House, among others.

Earth Hour is an event organised by the World Wildlife Fund (WWF) to turn off the lights to remind people to protect nature.

WWF wants to pay attention to climate change and nature canopy at the event.

Earth Hour was organized for the first time in Sydney in 2007.

This year’s Earth Hour was last night from 8:30 pm to 9:30 pm.