Private Day Trip to Ljubljana and Postojna Cave from Zagreb

Ljubljana is the capital city of Slovenia and a very nice small green metropolis. Its historical city center, the river Ljubljanica, the castle above the city, the open market… are only the few of the major attractions to explore. You will have some free time for a lunch and then continue towards Postojna. Postojna Caves are the second largest underground cave system in the world. Unique for its cave train which isn't to be found nowhere in the world. Predjama Castle is situated close to the caves and it is one of the most spectacular medieval castles and the biggest cave castle in the world.