Check out this giant liquefied natural gas tank that sits just to the side of the Southeast Expressway in Dorchester, Massachusetts. Ironcladlou (who is now on his fourth posted submission!) says: The gas tank (as it’s known ’round these parts) used to have a twin, which sat where the blank circle is just to the left of it. Originally, the now-demolished tank was the one with the rainbow painting, and when they destroyed it, they then painted the previously unadorned one. Another interesting tidbit, the gas tank is the largest piece of copyrighted artwork in the world.