http://www.flickr.com/photos/kemon01...n/photostream/
This is Dornier Do 335 V14 RP + UQ, prototype of the B-2 heavy fighter, under repair after the war in a French facility at Courbevoie or Bretigny.
When the ejector seat was refitted during repair, it was activated incidentally and penetrated the roof without causing any victims.
The wing panels in the foreground are also from a Do 335, recognizable by the sharp leading edges towards the wingroots.
Regards
Roland