river cruising the black sea to budapest 13 days | 2026-2027 budapest, bucharest, belgrade, constanta, pecs, ruse on this lower danube cruise budapest is your destination as explore westward from bucharest through central europe's ancient heart. discover dramatic castles, royal residences, 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 $8,490 ? from price, per person price shown is the lowest price per person, double, on most journeys. view tour compare