Why it's worth the trip
Český Krumlov's old town curls inside a tight bend of the Vltava river, overlooked by a hilltop castle nearly as large as the town itself. UNESCO-listed and remarkably intact, it's the kind of place that looks almost too picturesque to be real — cobbled lanes, pastel facades and a working castle you can actually walk into.
Getting there
Direct buses run from Prague's Florenc station, typically taking around two-and-a-half to three hours; train journeys usually involve a change and can take a little longer. Either way, book your seat in advance in peak season, as the route is popular and buses do sell out.
What to see
Český Krumlov Castle is the headline sight, with a distinctive painted tower and several interior circuits you can tour, plus a bear moat that's kept live bears (a Rosenberg-family tradition) for centuries. Below it, the old town itself is worth simply wandering — small museums, riverside cafés, and a genuinely quieter pace than Prague.
Day trip, or stay the night?
You can absolutely do Český Krumlov as a long day trip, but it rewards an overnight stay if your schedule allows one: once the day-trip coach groups leave in the late afternoon, the town empties out and feels completely different, lit up and quiet by evening.