You'll be spoilt for choice in Germany. Many newsagents sell as big a range of pipe tobacco as a specialist shop in London might. Well priced, too. I was in Munich recently and made my pilgrimage to Pfeiffen Huber and Preiffen Diehl where I bought some Samuel Gawith offerings I've never seen on a shelf in the UK.
I also ended up buying a few tins of other blends from a paper shop in an s-bahn station which had a big selection.
I've had the same experience elsewhere in the country. I actually bought my first proper pipe - a Peterson - from a tobacconist/newsagents in Konstanz, down in the south.
If you're buying new pipes there, it's hard to find one that doesn't come with a 9mm filter.
You will also actually see people out and about smoking a pipe, which I really enjoy. I'm a bit out of date with the smoking laws in different German Laender, but if you're lucky you might even be able to enjoy a Pilsner and a pipe at the same time whilst sitting in a nice Kneipe.
On a sidenote, regarding seeing others smoking a pipe... Dubai (where I live now) has a 'Smokers' Centre' shop in ever major mall, with a reasonable range of tobacco and quality pipes, pipe tools, filters and so on. I have never once seen anyone else smoking a pipe in Dubai though!
Viel Spass in Deutschland. I would love to live there again.