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The Metropolitan Outer Area Underground Discharge Channel is one of the world’s largest underground rivers, which puts to use Japan’s cutting-edge …
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Tripadvisor
4.5/5 · 33 reviews
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Oct 16, 2024
The Ryu-Q Kan is an amazing feat of human engineering where Tokyo is protected against flooding during major typhoons. There is a small museum here, where you can watch some videos in English and see…Full review by David N
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