From the World Heritage inscription:
?eský Krumlov is an outstanding example of a central European small town dating from the Middle Ages that owes the structure and buildings of its historic core to its economic importance and relatively undisturbed organic development over some five centuries. The town grew up within a meander of the Vltava river, which provides a natural setting of great beauty. Its evolution over time is evident with startling clarity from its buildings and its urban infrastructure. It has profited from a relatively peaceful history in that it has retained its entire medieval layout and most of its historic buildings relatively intact. Restoration and conservation has been slight and so there can be no question as to the authenticity of both the townscape and its components.
My biggest regret in the Czech Republic is not scheduling more time to spend in Cesky Krumlov. This is a great town and should be a priority for everyone who plans to visit the Czech Republic or North-East Austria. The entire city center is a walled fortress and looks like it came out of a storybook. It might be the most under appreciated attraction I’ve seen in Europe.
View the complete list of UNESCO World Heritage sites I have visited.