It is a mobile app featuring a virtual sommelie, which helps the visitor, so he or she can discover the wisdom and variety of vines and wines, unique to Ljubljana, the city of vines and wines.

While discovering the castle hill visitor learns a complete story: from the Žametovka castle vine the descendant of the oldest vine in the world, through the Castle Vineyard and the Castle Wine Cellar with wines from over 190 winemakers from all Slovenian winegrowing districts.

With an original combination of gameplay, new technologies, past and present, visitor learns about the diversity of the castle hill and Ljubljana Castle, and is finally rewarded at the Castle Wine Bar when he or she unravels wisdom of vines and wines.