The Lampyrudae or Firefly was Germany's attempt at a stealthy fighter plane. It was developed by Messerschmitt-B¶lkow-Blohm (or MBB). The shape was designed so that it would minimise radar reflection. In 1987 the project was cancelled. A number of tests were performed on smaller models in wind tunnels as well as low speed models were created. A 3/4 scale version was flown 15 times in 87 in the wind tunnel.
For full details on the design as well as more pictures check out f-104 and NitroCandy.