The Paris metro runs more than 600,000 miles per day – that works out as 10 times around the world each day!

A fascinating fun fact about the Paris Métro is that legend credits the system with the creation of the iconic French baguette. During the construction of the Métro in the early 1900s, laborers from different regions of France often got into violent disputes. Because they traditionally carried knives to cut their thick, round loaves of bread, these fights frequently turned deadly. To mitigate the danger, the lead engineer allegedly requested a baker to create a long, thin loaf that could be easily torn by hand, eliminating the need for knives on the job site. While historians debate the absolute truth of this specific origin story, it remains a beloved piece of Parisian lore. Additionally, the system is famous for its "ghost stations" like Porte Molitor and Haxo, which were built but never actually opened to the public, and are now occasionally used as film sets or for special underground events.