How Japan Built an Impossible 400 KM Wall Nobody's Ever Heard Of

Japan's $12.7 billion tsunami seawall runs 400 kilometers along the Tōhoku coast, built after 90% of the country's original seawalls failed in 2011. In Kamaishi, the world's largest breakwater still collapsed. In Fudai, one mayor's 15.5-meter floodgate saved 3,000 lives almost untouched. #japan #seawall #megaproject #engineering #tsunami #howitsbuilt #megastructure #civilengineering DISCLAIMER ____________________________________ This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.