Goričko Castle happens to sit on a particularly fascinating spot, the site of the last volcanic eruption in Slovenia. This momentous occasion occurred some three million years ago, and the the area is now home to an adventure and educational park where Oli the Mole will help visitors unearth the ways of volcanoes as well as taking a journey to its centre whilst searching for olivine crystals. Watch out for Ezo the Witch though, who is on the chase the entire time. Originally opened in 2013, the facilities have recently been renovated and expanded, with even more activities to participate in, such as volcanic games, 3D films with many special effects and a wonderful geological museum. Great fun for the whole family, as well as individuals and school groups. Located in the region of Prekmurje in the northeast corner of Slovenia, the park can easily be visited on a day trip excursion from Ljubljana, but with a wealth of sites and activities in the surrounding area and some of country's best food and friendliest people, it's well worth considering a longer stay.