Well, the information is in the tile :-)
The Bavarian State Library has a huge collection of 'Sinica' (i.e., China-themed) books, and apparently they have finished scanning them and making them available on-line. My German is rusty but apparently the collection contains 230,000 printed books and 3,000 manuscripts. At the moment they have digitised more than 1,000,000 pages... quite impressive!
Here is the link: Digitale Sammlungen Ostasien
There is a nifty search tool that accepts Asian characters, and I have already started looking for cool editions of the Water Margin [水滸傳]. Have fun!