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.

A Louvre expansion that would put La Gioconda in her very own gallery has us envisioning the most mysterious sitter in iconic rooms of art history.

The "Mona Lisa" is to get its own new room at the Louvre art museum in Paris, allowing it to be shown off to even better advantage for visitors. The legendary Leonardo da Vinci painting is to be given a room that better reflects its importance as part of an extensive renovation of the museum,