Arrive in Mannheim and disembark for a tour to Heidelberg to see Germany's oldest university, founded in 1386. Then visit the beautiful sandstone ruins of imposing Heidelberg Castle, and take in the scenery of the Neckar River Valley and the city's many red rooftops from its hilltop location. Continue with a walking tour through the Old Town to Heidelberg's renowned gates.
Return to your ship for afternoon cruising. Arrive in Rudesheim in the late afternoon. Spend free time in the pedestrian-only Drosselgasse and sample a glass of locally produced wine at one of the restaurants or wine bars - dine aboard or stay in town if you prefer. Remain moored overnight.