WWF describes Earth Hour as a light signal for the climate and nature. The symbolic gesture involved numerous European landmarks, including the Brandenburg Gate in Berlin and the Puento Nuevo bridge in Ronda, southern Spain. The Puento Nuevo bridge, which crosses the Guadalevín River and was completed in 1793, went dark during the event.
In Greece, participation involved turning off the lights of the Acropolis hill landmarks in Athens. Earth Hour was celebrated in European cities as well as in Asia, with examples including a dance performance organized in honor of Earth Hour in Banda Aceh, Indonesia. In New Delhi, India, the lights of the Humayun's Tomb mausoleum were turned off; the mausoleum was built in the 16th century as the burial site of the Great Mughal Humayun.
In the Chinese capital Beijing, lights were turned off from the skyscrapers in the city center. The global participation count and estimated energy savings from Earth Hour have not been confirmed, and it is unclear how this year's event compares to previous years in terms of scale or impact.