Things to do at Postojna Cave

Postojna Cave is Slovenia's most-visited underground attraction, about 53 km southwest of Ljubljana. 90 EUR bought separately. The visit runs roughly an hour and a half, part of it aboard a small underground train before the walking section begins. Booking a specific date and time slot online is, in practice, required rather than optional, since walk-up availability is limited.

Whatever the weather outside, the cave sits at a constant 8-12 degrees Celsius year-round, so a jacket matters even in the middle of an August heatwave. This page covers the cave visit itself; Predjama Castle, 9 km away, and Skocjan Caves, further south, each get their own page.