7-day loop tour | danube romance, 4-star hotels, vienna+budapest+prague+berlin+zurich+lucerne+liechtenstein 5.0 (4 reviews) tour code: 16662 start / end city frankfurt, vienna, budapest +5 more duration 7.0 days city & attractions frankfurt, zurich, luzern +35 more languages chinese live, english live group type standard group tour from $1,065.41 from $1,065.41 see details