highlights of eastern europe (2025) budapest to bucharest | 10 days immerse yourself in new cultures as you travel from splendid budapest to dynamic bucharest, discovering the best that the revitalized nations of eastern europe have to offer along the way. gaze in... ships: river duchess, river princess, s.s. beatrice countries: bulgaria, croatia, hungary, romania, serbia river: danube 4.4/5 (423 reviews) from $6,799 per person view itinerary dates & pricing