Bratislava rewards a short visit with an easy walk between highlights. Start at Bratislava Castle for sweeping views over the Danube, then head to the UFO Observation Deck atop Most SNP for a striking modern counterpoint and skyline panorama that even stretches toward Vienna, Austria on a clear day. Back in the old town, St. Martin's Cathedral and the lively Hlavné Námestie anchor a compact historic core best explored on an Old Town Walking Tour. Together these stops cover castle, skyline, and medieval streets in a single, unhurried day.