Dubna
Dubna occupies a meeting of rivers: the Dubna enters the Volga at this point. In the medieval period the crossing and water route supported several competing jurisdictions. Yuri Dolgoruki ordered a fortress built in 1132, and that stronghold survived until dynastic warfare brought its destruction in 1216. Elsewhere in the same area, Gorodishche stood on the Volga’s right bank under Kashin, while the customs post on the Dubna belonged within Tver’s sphere.
Podberezye and other villages occupied both banks in the medieval and early modern periods. The junction of the Volga and Dubna provided a setting for river travel, crossing and the collection of tolls, while jurisdiction in the surrounding area changed between neighbouring principalities.