The ruins of the medieval Kachau Castle are located in the northern part of the city of Kosice. The main purpose of the construction of this castle was to protect the salt depot. It was demolished during the Tokoli revolution by the imperial armies in 1679, and perhaps the most important thing that can be seen among the ruins It is the Nibuisa Tower from which you can get a very beautiful view of the surrounding countryside. The area also includes interesting statues, as well as a number of bridges and walking paths.