Seto Ohashi Bridge
I traveled to Shikoku recently, catching the Shinkansen to Okayama and then the train to Takamatsu, crossing the Seto Ohashi Bridge. This is a stunning set of bridges that links Honshu to Shikoku. There are 2 other bridge routes to Shikoku, but this is the only one that trains go across. The view from Washuzan looking over the bridge was fantastic.