Pictures: World's Iconic Buildings Go Dark for Earth Hour
Iconic buildings go dark to raise awareness around energy consumption and climate change.
The bright green lights that typically illuminate the Petronas Towers in Kuala Lumpur—the tallest twin buildings in the world—were turned off for a recent Earth Hour—an annual event aimed at raising awareness about energy consumption.
Dozens of other iconic landmarks around the world, including the Parthenon in Greece, the Golden Gate Bridge in California, and Australia's Sydney Harbor Bridge, have participated in the annual event, which is sponsored by the World Wildlife Fund (WWF).
The first Earth Hour took place in Sydney in March 2007, with the goal of raising money to help protect the Great Barrier Reef.
Since then, Earth Hour has grown and spread around the world. Thousands of cities now switch off many lights for the hour in a
