Yeah! Like you said, Germany is so beautiful and SO much history that I would love to visit again, too.
Ah! Thanks for the right word, "the locks", and not "the keys"..... (My first thought was right, but I have changed my mind when I wrote it down in my article.... Ha ha!)
As far as I understand, these locks maybe the symbol of "forever love"..... It is believed that two lovers who put the lock together will never be separated.... I'm not sure whether my understanding is correct or not! But, it would be good signs or great meaning, for sure! ;D
Many thanks for your nice comment and sharing your experience with me....
Have a wonderful night, GFF! ;))))
(My brother has visited U.S.A recently and I hope he would send some photos for me to present here.... From the two photos that he previously sent to me, I can say that, U.S.A. has also beautiful places. I would love to visit U.S.A., too)