A bunker, which was abandoned during the World War II and left to rot, was turned into graffiti art on the beach in Leffrinckoucke, France on Monday. /VCG Photo

The bunker was covered in pieces of broken mirrors by an anonymous artist. /VCG Photo

The bunker is one of the impenetrable cement bunkers built in a long row extending the length of the fort before the mid 1950s. /VCG Photo

Nowadays, street artists use the bunkers as canvases and turn them into massive graffiti projects. /VCG Photo