Kongresni trg is the meeting place for the guided tour of Ljubljana, which will take place on Monday, September 12, at 19:00. Look for the ICFP signs and join the groups. Tourist guides will take you on a short and relaxing walk through the city center. After about 40 minute tour you will go up to the castle for the ICFP reception.
Kongresni trg on Google maps and OpenStreetMap.