The Sea Wall That Saved Holland

The Afsluitdijk dam is one of the prominent landmarks of Holland. Stretching for 20 miles (32 km) across the water, just 25 feet (7.6 miles) above sea level, this dam was officially opened in 1933 and helped save large parts of the country from a devastating flood in 1953. Now, the Dutch authorities have planned to give this engineering marvel an awesome makeover. The structure is all set to be strengthened to allow it to withstand a one-in-ten-thousand-year storm event. Learn more about this amazing upgrade in this video.