In a recent trip to Paris, my wife and I visited the Montparnasse Cemetery, hoping to find the tomb of the mathematician Évariste Galois. We were disappointed to learn that although Galois was indeed buried in the cemetery, he was buried in a common grave and the burial site can no longer be identified. However, we were delighted to have found the family tomb of Henri Poincaré. Apparently, mathematicians have developed the tradition of leaving their used Paris Metro tickets on the stone. We left ours.