At the airport in Vienna they may well be saying "Those silly American tourists!" after a 24 year old woman who found an unexploded tank artillery shell during her visit and decided it would make a great souvenir. She even washed it in her hotel room so it wouldn't get her clothes dirty when she packed it! Here's a valuable tip for anyone traveling into Europe, especially in areas that saw action during the second world war: if you find a bomb, you can not take it home..in fact you aren't even supposed to touch it. Call local authorities and above all, do not even think about taking it into your hotel room to give it a bath! ALMOST A DARWIN AWARD WINNER!