Given its very recent past of heavy mercury contamination, no wonder that Idrija is well aware of environmental issues and practices selective gathering of municipal refuses. On this photo, there are 4 bins.
Papir (paper), embalaža (plastic packing), Steklo (glass) and unmarked for others.
Not a local custom, but a local culinary speciality: Idrija žlikrofi. These are little pasta squares that are filled with minced meat, potatoes and onions. They taste really good, so try it if you are there! We had them in 'Gostilna Turk', I think it's in Hotedršica, two villages away from Idrija in direction Ljubljana, at the main street - a very good restaurant!
The municipal holiday of Idrija is St. Ahacija's day, 22nd June each year. It was on this day in 1508 that rich cinnabar ore was discovered in Idrija - the raw material from which mercury is obtained.
A festival is held each year - in the past it was celebrated with a huge procession, but nowadays it is a more moderate affair, but an interesting opportunity if you are in the vicinity on the day.