Philosophenweg is a foot path on the hill across the river from the Altstadt. The climb up isn't easy and can be slippery when wet, but it's worth the effort to have a breathtaking view of Heidelberg at the end. It's no wonder why all those philosophers wanted to walk there!
Across the river from the Alstadt is this path that offers a great view of the city. On the top of the Heligenberg (Holy Mountain) lie the ruins of St Micheal Basilika and an amphitheater built under Hitler in 1934 on the site of an ancient Celtic gathering palce.
PHILOSOPHENWEG is a "path of philosophers". A nice walking area on the hill opposite to the castle.
On the photo you can see groups of students of the HD University who have studies in outdoor classrooms ;-))
The "philosophen weg" is a great walk path on the hill situated on the other side of the river that offers you a breathtaking view on the old town of Heidelberg. Its nicest part is situated between the two main bridges of the town.
On the north side of the Neckar, you can take the Philosophenweg (Philosopher's way), a path that goes up to a belvedere where you have a great view of the castle and the Old Town. If you feel like walking up a little more, you can continue up to the "Heiligenturm", a small tower where you can get a really great view.
According to a legend a cortege of the Princess Lizelotte stoped at this point and princess ruled to build a castle on the opposite side of the river.