Maeslantkering, Storm surge barrier in Hook of Holland, Netherlands
Maeslantkering is a flood barrier near Rotterdam that stretches 360 meters across the Nieuwe Waterweg with two enormous steel gates weighing 6,000 tons each. These gates normally stay open to let ships pass, but close automatically when water levels rise dangerously high.
The barrier was built in 1997 following the devastating North Sea storm surge of 1953 that killed thousands. This structure was designed to prevent such a disaster from happening again and to prepare for extreme water events.
The barrier shows how Dutch people have learned to live with water and protect their communities through clever building. Walking around it, you notice the pride locals have in managing one of nature's most powerful forces.
You can view the barrier from a visitor center or from various viewpoints around the site. Visit during daytime for the best views of the massive steel structures and their surroundings.
The barrier closes automatically when water levels rise 3 meters above normal, without any human control needed. A sophisticated computer system watches the water continuously and triggers the closing process on its own.
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