Explore the grandest castle ruin on the Rhine — a labyrinth of tunnels, towers, and battlements above St. Goar — with a private licensed historian as your guide. This is the Rhine Gorge's single most dramatic man-made sight.
What to expect
Combined with the KD boat to St. Goar, your private guide meets you at the castle gate and leads you deep into Rheinfels's remarkable tunnel system — torchlit passages blasted through solid rock by the Landgraves of Hesse to repel Louis XIV's armies. Above ground, you walk the vast curtain walls for unobstructed Rhine Gorge views that stretch for miles in both directions. The guide weaves together the castle's role in Rhine toll wars, Napoleonic demolition, and romantic 19th-century reconstruction with storytelling that makes the stones come alive. A glass of local wine on the battlements rounds off the visit perfectly.
Good to know
Pair with the KD Rhine Gorge cruise (see above) for a seamless full-day itinerary. Book the guide via GoWithGuide at least 5–7 days ahead. Sturdy shoes essential for tunnel sections. Allow 1.5–2 hours at the castle; total day including KD cruise approx. 5–6 hours. Confirm all-aboard time carefully.