Tourism conglomerate that operates the biggest attraction park in the region, Postojna Cave Park, where you can find 2 Slovenias main tourist attractions: Postojna cave (Slovenias nr. 1 attraction), Predjama castle (the worlds biggest cave-castle), and more. Complementary travel services for all types of travelers (individual/group, budget-luxury): 3, 4 and 5 Hotels: SKI & Thermal Resort Cerkno, 3 Rooms and Apartments Proteus, 4 Hotel Jama and 5 Boutique Hotel Vila Planinka. Restaurants, Activities all year round, Congress center and tailor-made incentive programs.