PARIS: Four years and almost 5 million euros later, Leonard da Vinci's Mona Lisa has moved into spacious new digs at the Louvre Museum in Paris but her famous smile remains as enigmatic as ever. From Wednesday, visitors will find the 500-year-old painting in the Salle des Etats, a large gallery that served as a parliamentary debating chamber until 1870 and which has undergone a 4.8 million euro makeover since 2001. Peruvian architect Lorenzo Piqueras said he wanted to make it easier for six million annual visitors to find what is arguably the world's most celebrated smile, and to prevent...