With the three Timok rivers, namely the Trgoviški, the Svrljiški and the Beli Timok rivers, the seven bridges and most beautiful Stara čaršija (Old Bazaar), Knjaževac even impressed Corbusier. There is an arranged spring of warm medicinal water nearby the town, and the lovers of active rest in intact nature can enjoy the mount of Stara planina (50km). Zaječar - This town, lying at the confluence of the Beli and the Crni Timok rivers, with the sports-recreational complex "Popova plaža", will offer you a handful of possibilities for fun and recreation. The National Museum is certainly a "must-see". The imperial Roman town of Felix Romuliana (4th century), under UNESCO protection is located in Gamzigrad, nearby Zaječar. The valley of the Crni Timok that originates at the foot of mount Rtanj, called "the Serbian pyramid" because of its shape and mysticism, is interesting for exploring. You should also pay a visit to Bogovinska Cave.