The ethnic corner of the Grudonjska watermill is located in the settlement of Gradašnica (2 km from the centre), on the river of the same name. It consists of 2 mills, more than two centuries old. The large mill has been converted into an ethnic-kitchen where each of the visitors can, with the help of the instructor of the ethnological workshop "Ethnos", prepare dishes from the Sokobanja region according to the traditional recipe. Another smaller mill will be converted into an old craft workshop. In the yard, there is a small amphitheatre in which various programs related to the history and tradition of the Sokobanj area are held.