Not far from Omaha Beach on the sands of Normandy, lie the remains of a huge number of armored vehicles.  The majority seem to be Shermans, but there are some I can't identify.  You would think most of this stuff would have been cleaned up by now, but maybe there is just such a huge number of these remains that it's not possible.  The bottoms of the lakes and rivers most likely have plenty of remains also.

picture of wreck in Bilville France

One such place around Vasteville has been extensively photographed by Panoramio contributor golouat.  His page is full of armored vehicles in various states of decay.  There is also this video of the Biville/Vasteville area, from YouTube contributor ritchiewinter.