I put a post about the Rhine up here:
This one's only about a particularly scenic part of the river and not exactly Nibelung related, but I'll write posts about Xanten and Worms with some background about the German epic (and a hint of Wagner). :)
I have a blog where I put up posts with photos and text, no albums. But I can put something Nibelung-related up this week to link to your Ring posts here. BTW, is there a chance to get a master post that links them all, like with the WoT reread and other topics? It would be easier to crosslink that to my blog (don't know if I have some secret Wagner fans, but it could well be).