Street Art Project by Google

This is actually pretty cool - you can explore old and current street art from around the world. 

http://www.google.com/culturalinstitute/browse/?projectId=street-art

Yet another thing that Google has got their hands in? Well of course, and it does make it a bit less attractive but overall its great to have exposure to some amazing work that you otherwise might have not been able to find in one place.