Marie Curie the franc was replaced by the euro. Curie themed postage stamps from Mali, the Republic of Togo, Zambia, and the Republic of Guinea actually show a picture of Susan Marie Frontczak portraying Curie in a 2001 picture by Paul Schroeder. On the first centenary of Marie Curie's second Nobel Prize in 2011, an allegorical mural was painted on the façade of her Warsaw birthplace. It depicts an infant Maria Skłodowska holding a test tube from which emanate the elements that she would discover as an adult: polonium and radium. Also in 2011, a new Warsaw bridge over the Vistula was
Pierre Curie in honor of Pierre, Marie, or both. In the late nineteenth century, Pierre Curie was investigating the mysteries of ordinary magnetism when he became aware of the spiritualist experiments of other European scientists, such as Charles Richet and Camille Flammarion. Pierre Curie initially thought systematic investigation into the paranormal could help with some unanswered questions about magnetism. He wrote to his fiancée Marie: "I must admit that those spiritual phenomena intensely interest me. I think in them are questions that deal with physics." Pierre Curie's notebooks from this period show he read many books on spiritualism. He did not attend