Last spring, the world’s most-visited art museum, the Louvre in Paris, proposed moving its most popular artwork—Leonardo da Vinci’s Mona Lisa—to its own subterranean room. Now, that idea is becoming reality.

President Emmanuel Macron announced plans to alleviate crowds at the Paris museum and to charge higher fees for visitors from outside the European Union.

French President Emmanuel Macron announced plans to expand the Louvre and move the Mona Lisa to a new exhibition space, after the museum warned of overcrowding.