I am planning a trip to Germany for the end of September, any good place where to go? In particular, I would like to see some nice lakes.
Do you already have other destinations in mind, or is it just trekking and lakes? On foot, by bike, by boat? Genuine nature or scenery with tourist infrastructure?
There are many lakes, but keep in mind that Germany is densely populated, you won't find really spectacular wilderness. Have a look at these examples: