Earth Hour 2023 rallies the world

The lighting of the Brandenburg Gate is still switched on shortly before the start of the "Earth Hour" campaign.

A woman wearing a red gown poses in front of the illuminated Moscow Kremlin, Russia, 25 March 2023. The kremlin decided not participate in the Earth Hour action this year.

A view shows Humayun's Tomb after the lights were turned off for Earth Hour in New Delhi, India. March 25, 2023.

People use candles to create the number 60, representing the minutes in an hour, as they mark Earth Hour in La Paz, Bolivia, Saturday, March 25, 2023.

The Christ the Redeemer statue stands after the lights that illuminate it were turned off to observe an hour of voluntary darkness for the global "Earth Hour" campaign in Rio de Janeiro, Brazil, Saturday, March 25, 2023.

Pedestrians walk next to the Colosseum, normally lighted prior to a switch off as part of the Earth Hour initiative, in Rome on March 25, 2023.

This picture shows the Sydney Opera House with its lights switched off during the Earth Hour environmental campaign in Sydney on March 25, 2023.

A view of the ancient Parthenon temple atop the Acropolis hill during Earth Hour in Athens, Greece, March 25, 2023.

A view of the illuminated Saint Basil Cathedral at the Red Square in Moscow, Russia, 25 March 2023.

A view of the Temple of Dawn after lights were turned off for Earth Hour, in Bangkok, Thailand, 25 March 2023.