Mona Lisa had closed. Peruggia was an Italian patriot who believed Leonardo's painting should have been returned for display in an Italian museum. Peruggia may have been motivated by an associate whose copies of the original would significantly rise in value after the painting's theft. A later account suggested Eduardo de Valfierno had been the mastermind of the theft and had commissioned forger Yves Chaudron to create six copies of the painting to sell in the U.S. while the location of the original was unclear. However, the original painting remained in Europe. After having kept the "Mona Lisa" in his apartment for
Paris in the 18th century the "Petits-Augustins" became officially the Museum of French Monuments. Construction begins on the church of "Sainte-Geneviève" (now the Panthéon). Paris in the 18th century Paris in the 18th century was the second-largest city in Europe, after London, with a population of about 600,000 people. The century saw the construction of Place Vendôme, the Place de la Concorde, the Champs-Élysées, the church of Les Invalides, and the Panthéon, and the founding of the Louvre Museum. Paris witnessed the end of the reign of Louis XIV, was the center stage of the Enlightenment and the French Revolution, saw the first manned flight,