Iconic landmarks and skylines were plunged into darkness on Saturday for the "Earth Hour" switch-off.

The iconic Sydney's Opera House and Harbour Bridge in Australia were among the earliest venues blacked out for 60 minutes at 8:30 pm local time during the annual Earth Hour.

READ: Lights out for Earth Hour's global crowdfunding call

The Earth Hour was originated in Sydney with a simple appeal to people and businesses to turn off their lights for an hour to raise awareness on carbon pollution and climate change.

Below are photos from the Earth Hour, shared by netizens.

Malaysia







Australia



Singapore

The tree pose at The Float Marina Bay #earthhoursingapore #changeclimatechange #earthhoursg #earthhour2016 #wwfsg #wwf

A photo posted by อั๊ต อัษฎา Utt (@whatheutt) on


China


Indonesia