Bath is hosting a public art exhibition with 100 large sculptures of lions, painted by artists, located in various places around the city. Some of the money for charity will be given to help protect dwindling numbers of lions in the wild. (London hosted a similar public event this year with 250+ elephants.)
During the lion-spotting, I came across one lion that was painted white and covered with many mobile-scannable barcodes (known as QR or QuickResponse barcodes). Using a mobile phone, the barcodes could be scanned, and this would display the location of another lion via a web URL; a URL to the official Facebook and Twitter groups were also present. (I remember first seeing this technology back in 2006 and blogging about it as an innovative way to share and market information.)
I enjoyed the innovative use of technology and art, and others who walked by the lion stopped to interact with the exhibit/technology as well.