The Vltava has carried commerce, armies, and crowned heads through ten centuries of Bohemian history, but its modern role as Prague's floating stage began in the 1990s when entrepreneurs moored the first purpose-built dinner boats at Nábřeží Na Františku. By 2010, glass-topped vessels had replaced the original wood-paneled cruisers, turning the two-hour evening circuit into a moving gallery of illuminated monuments. Charles Bridge, completed in 1402 under the patronage of Wenceslaus IV, appears from below as a Gothic arcade of sixteen arches, each pier anchored to bedrock sunk twelve metres into the riverbed. The Prague jazz boat dinner cruise tours depart nightly from Pier 18, a reconstructed wharf that served coal barges until 1989. Live jazz became the signature offering in 2003, when Czech musicians returning from conservatories in Vienna and Boston formed resident quartets aboard the vessels. The repertoire spans Dixieland standards, bebop improvisations, and Central European folk motifs recast in syncopated time. Instrumentation varies by boat: some carry upright basses and drum kits; others rely on portable keyboards and amplified guitars. The acoustic environment inside a glass-roofed cabin, with river water reflecting sound upward, creates a resonance chamber that flattens high frequencies and extends sustain on brass instruments. Buffet menus draw from Bohemian culinary tradition—roast pork with sauerkraut, potato dumplings, smoked trout from the Šumava highlands—adapted for volume service in onboard galleys no larger than twelve square metres. Chefs prepare dishes in shore-side commissaries, then reheat them in convection ovens as the boats navigate downstream toward Vyšehrad. Beverage programs emphasize Moravian wines, Pilsner lagers, and becherovka, the herbal liqueur distilled in Karlovy Vary since 1807. Service runs buffet-style to accommodate the three hundred passengers some vessels carry, though smaller boats with seated dinners limit capacity to eighty. The route follows a fixed loop: north past the Rudolfinum concert hall, beneath Mánes Bridge and Čech Bridge, then south past the National Theatre and the Dancing House, a deconstructivist landmark completed by Frank Gehry in 1996. Total travel distance is nine kilometres, completed in two hours at an average speed of 4.5 kilometres per hour. Captains throttle engines to idle when passing under bridges, allowing passengers to observe the stonework arches and wrought-iron lampposts installed during the Habsburg renovations of the 1870s. The return leg, against the current, requires diesel engines to work harder, and the increased vibration often prompts musicians to pause between sets. Boarding begins thirty minutes before the 20:00 departure, with gangways lowered at Pier 18 and crew checking mobile vouchers at the boarding ramp.