Heidelberg — a romantic university town on the Neckar River, famous for its ruined hilltop castle, cobblestone Altstadt, and centuries-old academic tradition.

A dramatic Renaissance ruin overlooking the Altstadt and Neckar Valley, home to the Great Vat, one of the world's largest wine barrels.

An 18th-century stone bridge over the Neckar, framed by the Bridge Gate towers and classic postcard views of the castle above.

A scenic hillside path across the river once favored by university scholars, offering the best panoramic views of the Altstadt and castle.

Germany's oldest university (founded 1386), whose quirky former student jail (Studentenkarzer) is covered in generations of graffiti.