capital cities of the danube (2026) belgrade to vienna | 8 days the great danube river, once the lifeblood of empires, has been home to europe鈥檚 greatest cities for eons. join us on a journey spanning the four capital cities that sit along the banks of the... ship: s.s. emilie countries: austria, croatia, hungary, serbia, slovakia river: danube from $3,199 per person view itinerary dates & pricing