This is the country's only gazetted national park and includes almost all of the Slovenian Julian Alps. The tallest peak is Triglav but there are many other peaks here reaching over 2000m (6500ft), and the park is rich in flora and fauna. Mountain climbers are well catered for, but there are easy hikes too through beautiful valleys, forests and fields.
Predjama CastlePredjama Castle actually appears to grow out of a yawning cave. The partly furnished interior boasts costumed wax mannequins, one of which dangles from the dripping rock-roofed torture chamber. Beneath are stalactite-adorned caves, which lack Postojna's crowds but also much of its grandeur.
Bled CastlePerched atop a 100m (328ft) cliff, Bled Castle is the perfect backdrop to a lake view. One of many access footpaths leads up from behind the Bledec Hostel. Admission includes entry to the museum collection as well as Castle Printworks.
National GalleryOf several major galleries and museums west of Slovenska, one of the best is the impressive National Gallery, which contains the nation's rich and sophisticated historical art collection. Give yourself plenty of time to take it all in.
¦kocjan CavesThe immense ¦kocjan Caves, a UNESCO World Heritage site since 1986, is a highlight of any trip to Slovenia. With relatively few stalactites, the attraction here is the sheer depth of the awesome underground chasm, which you cross by a dizzying little footbridge. This involves a shepherded two-hour walking tour and ends with a rickety funicular ride.