The world's most visited museum is also overcrowded, antiquated and desperate for renovations that will start next year and include separate space and tickets for Mona Lisa.

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.

The Leonardo da Vinci masterpiece that visitors crowd in to see will get a dedicated room as the Paris museum is renovated and expanded in a major overhaul that will take years, the French president announced Tuesday.