The Hron is a 271-kilometre (168 mi) long left tributary of the Danube and the second-longest river in Slovakia. It flows from its source in the Low Tatra Mountains through central and southern Slovakia, emptying into the Danube near Štúrovo and Esztergom. Major cities and towns on the Hron are Brezno, Banská Bystrica, Sliač, Zvolen, Žiar nad Hronom, Žarnovica, Nová Baňa, Tlmače, Levice, Želiezovce, and Štúrovo.