Postojna Cave and Castle Half day tour
The mystic underground of the Postojna Cave, most prominent karst cave in the world, with the Predjama Castle, listed among the Guinnes World Records as the largest cave castle.
One day to Nis, the Capital of South-East Serbia from Sofia
Explore the third Serbian city by size, the birthplace of the famous Roman emperor Constantine the Great and city situated by river Nisava.