Guide to Industrial Tourism in Japan
My pick for a sight that sounds mundane but is actually fascinating:<p><a href="https://www.jetro.go.jp/en/eccj/ind_tourism/metropolican_discharge.html" rel="nofollow">https://www.jetro.go.jp/en/eccj/ind_tourism/metropolican_dis...</a><p>TL;DR: It's the world's biggest storm drain, hiding under greater Tokyo.<p><a href="https://www.amusingplanet.com/2013/03/g-cans-tokyos-massive-underground-storm.html" rel="nofollow">https://www.amusingplanet.com/2013/03/g-cans-tokyos-massive-...</a>