Poppy Flowers

Still missing after its second theft, in 2010. Van Gogh's still life was first stolen from the Mohamed Mahmoud Khalil Museum in Cairo on June 4, 1977 and recovered ten years later in Kuwait. In August 2010 it was taken from the same museum again. Within hours Egyptian officials announced that it had been found, then had to admit the announcement was wrong. Valued at an estimated US$55 million, it remains missing, so the one museum has now lost the same painting twice.