What mysterious mark is hiding in plain sight on the Mona Lisa's protective glass? After leading more than 75 Paris tours, The Traveling Professor discovers a puzzling clue, hears a security guard's extraordinary story, and investigates.

Discover the perfect one-week Paris itinerary featuring Notre Dame, Versailles, the Louvre, Musée d’Orsay, Montmartre, boutique hotel stays, casual restaurants, public buses, neighborhood walks, and authentic small group travel with The Traveling Professor.

Paris may be one of the world’s great food cities, but it can also rob you blind at dinnertime. These top bouillon restaurants in Paris serve classic French food, real atmosphere, and prices that will not require grief counseling.

Looking for cheap hotels in Paris that are actually worth booking? This TravelPDQ guide highlights affordable, well-located, and charming hotels in the Latin Quarter, Marais, and beyond for travelers who want value without sacrificing the Paris experience.

Visiting Paris and not sure which art museums to prioritize? Start with the Louvre, Musée d’Orsay, and Musée de l’Orangerie for the city’s most memorable masterpieces.