In this 5-hour tour, you will visit the most popular attraction in Slovenia! Postojna caves is one of a kind, not just in Slovenia, but also in Europe. Explore fascinating underground systems and learn more about these natural phenomena. You enter and exit the cave by a small electric train and proceed your way by foot in-between.Just a few minutes drive from the caves, there is another magnificent place - the Predjama castle. This remarkable stone-cave built castle will take you back to medieval times and make your excursions memorable. Predjama offers one of the best photo stops opportunities in Slovenia.When visiting the cave, be sure you are dressed comfortably with good walking shoes and dressed in layers.