I visited the town twice in short succession: in April 2007 to visit my friend Sigrid, who lives there and in June 2007 because of our annual works outing, which led us to Heidelberg this time. lol
Heidelberg is a nice, old town at the river Neckar in a valley surrounded by woods with lots of beautiful houses and places. But what impressed me most about Heidelberg was/is the Heidelberger Schloß (see my entry about that ;)), which is Germany’s most popular castle ruin. :)