There are many statues and displays of this particular saint in Prague, enough so that I actually went to look him up on Wikipedia. As with many historical figures, there are different stories surrounding John, but he still sounds like a person who stood for his beliefs, and didn't even let a king push him around, so I can understand why he'd be admired.
http://en.wikipedia.org/wiki/John_of_Nepomuk
I think I have another photo of his that I may upload later. For now though, we're battening down the hatches as a typhoon is supposed to hit Tokyo early tomorrow morning.
For those of you in Tokyo, stay safe and good night!
