4scenic
Budapest is the 'Pearl of the Danube,' and the river is the attraction: a glass-roofed Legenda boat glides past Parliament, Buda Castle, the Citadel, and the Chain Bridge from the water -- the exact angle the city was built to be seen from. Legenda is the established premier operator with a modern panoramic fleet departing centrally. It is the lowest-effort, highest-reward use of a port day, and the safe near-river fallback if a marquee slot sells out.
Who to callLegenda City Cruises (Legenda Kft.)~$22 adult (EUR 20); ~1h10m, 30-language audio guide, one drink (champagne/wine/beer/soft) plus a Duna Bella lemonade, free wifi, optional 45-min Margaret Island stop.
Book direct →
Beats the shipMixed, lean direct. Many river lines pass these landmarks free from the ship deck, so do not pay for a daytime cruise you essentially get for free. But for a proper narrated sightseeing run, Legenda direct at ~$22 with a drink beats the ship's ~$35-55 optional illumination cruise by $13-33 pp -- book the evening Legenda sailing if your ship overnights.
What to expect, timing & how to book →