Heidelberg is a very picturesque city on the Neckar with a castle and a very nice old town. Around 135000 people are living in Heidelberg, plus almost 30000 students, and around (in summer) two and a half gazillion tourists, mainly from the US and Japan. I went there with my Honey Bear on Monday, April 1st to show her that place.
We went once more to Heidelberg, it has been awhile since the last time. Again we went through the old town, and certainly the castle, too, this time I even did a guided tour.