Distance: 20 km
This enormous and very well preserved castle is located near the town of Sobotka. What is unusual about Kost Castle is that it is not standing on a high hill or a headland, but in a valley. However, the fact that is was built on a block of rock made it an impregnable castle for centuries. The valley Plakánek in which it is located is considered as one of the most romantic in the whole of Český ráj/Bohemian paradise region.