I have found one of the coolest search on Google.. It is Live Cams.
Yes you can see most of the unsecured security cams around the world like shopping centers, offices, streets & beaches..etc.
Here it how it works open google and past this : inurl:"axis-cgi/mjpg" and open any of the websites with IP addresses (just numbers).
One problem with this is u have to refresh inorder to get new images but if u use Mozilla Firefox therefore you need not to use refresh.