The Danube covers the 60-odd kilometres between Vienna and Bratislava faster than most trains did a century ago, and the two capitals sit closer together than any other pair in Europe. That proximity shaped everything. Bratislava — Pressburg to the Habsburgs, Pozsony to the Hungarians — served as the coronation city of the Kingdom of Hungary from 1563 to 1830. Eleven monarchs and eight queens took the crown inside St Martin's Cathedral. Maria Theresa was crowned there in 1741, and the gilded replica of her crown still sits atop the cathedral tower, weighing some 300 kilograms. The river route matters because the land route was always the awkward one. Vessels once carried salt, grain and Hungarian wine downstream; the Iron Curtain then closed the corridor for four decades, leaving the Slovak bank fortified and the Austrian bank quiet. A vienna to bratislava tour by bus and boat retraces a passage that was militarised within living memory. High-speed catamarans returned to the water in 2006, docking at the pontoon beside the Old Town rather than at some distant industrial quay. What arrivals find is a compact medieval core of roughly 0.5 square kilometres, ringed by contradictions. Bratislava Castle sits on its rock above the river, rebuilt in the 1950s to a Baroque four-tower plan first drawn under Maria Theresa. Below it stands the Blue Church, Ödön Lechner's 1913 Art Nouveau chapel finished in pale cobalt tile. Further out rises the UFO observation deck on the SNP Bridge, a 1972 asymmetrical cable-stayed span with a saucer 95 metres above the water. Devín Castle guards the Morava confluence to the west, its ruins dating to the ninth-century Great Moravian empire. The Old Town rewards slow reading. Michael's Gate is the last of four medieval city gates, its tower topped by a statue of the archangel. The Primate's Palace holds six English tapestries walled up and forgotten until 1903. Čumil, the bronze sewer worker, leans out of the pavement on Panská Street. Guided vienna to bratislava tour by bus and boat itineraries typically pair these Bratislava landmarks with the Danube crossing itself, so the city is read as a river city first. Base one-way fares on the scheduled catamaran start at 28 EUR per person, varying by season and class — the coach and speedboat combinations on this page each price differently.