Driving on highway E 97, you have to turn to the west near the town of Dupnitsa to reach the administrative centre of the region, Kyustendil. Thus, you will be traveling on the oldest road which connected Constantinople with Bosnia and the region of the Adriatic Sea . The region, however, is most famous for its numerous mineral water springs: hot mineral water springs in Kyustendil, Sapareva Banya, the villages of Nevestino and Chetirtzi.