river cruising budapest to the black sea 13 days | 2026-2028 budapest, bucharest, ruse, constanta, pecs, belgrade explore central europe's ancient heart on a river cruise along the danube's lower reaches to the black sea. discover dramatic castles, centuries-old monasteries, and myriad cultural treasures as you sail aboard one of tauck's premium riverboats, and enjoy two-night stays at city-center hotels in budapest and bucharest. expand from $7,490 ? from price, per person price shown is the lowest price per person, double, on most journeys. view tour compare