Yonezawa in Yamagata, Japan have a forward looking Chamber of Commerce. They have put up a series of posters around the district with maps and QR Codes. The QR Code takes you to a mobile site where you can find information relating to local restaurants (Yonezawa is famous for its beef) shops and historic buildings. The information is sorted in distance away from where you are located which is useful. More interestingly the historical information can be viewed in English if required.
It says a lot for the error correction feature in the QR Code that they have managed to embed a caricature of a local ancient feudal ruler, Uesugi Harunori. See also BBC Logo.