Every year, thousands of cities take part in Earth Hour, an international event launched by WWF. The concept is simple: turn off the lights of iconic buildings and monuments for one hour to raise awareness about the climate emergency. The 2026 edition will have a special flavor, as it marks 20 years of this global mobilization.
A global movement for the planet
Once a year, over 185 countries join in this symbolic action. Cities like New York, London, Sydney, Singapore, and Paris plunge their monuments into darkness.
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In France, many cities are getting on board: Lyon, Bordeaux, Marseille... and Lille. The goal isn’t just to save electricity for an hour, but above all to remind us of the impact our lifestyles have on the planet and to encourage everyone to adopt more responsible habits in their daily lives. Even though the blackout is symbolic, it still helps to avoid emitting several tons of CO₂ globally.
Several emblematic places in Lille will be involved
In Lille, this initiative will specifically mean turning off the lights of several iconic buildings and monuments in the city. As in previous editions, Lille's Town Hall and its belfry, which is classified as a UNESCO World Heritage site, are expected to take part.
to participate in the event. For one hour, these usually illuminated monuments will vanish into the darkness: a symbolic moment that reminds us that light is never taken for granted and that every action counts.
An Hour to Reflect and Look Up
Beyond the ecological gesture, Earth Hour also invites us to take a collective pause. An hour without unnecessary lighting, to slow down a bit, look up at the sky, or simply become aware of the impact of our habits. In Lille and beyond, this annual blackout has become a little symbolic gathering for the planet.
Earth Hour
Saturday, March 28, 2026, starting at 8:30 PM
More info