Marco Polo travelled the Silk Road to China, discovered noodles, and carried the idea home, giving the world Italian pasta. It is the romantic origin of spaghetti, repeated on menus and in food docos: East meets West, and dinner is never the same again.
Italians were eating pasta before Marco Polo was born. There are records of pasta in Italy and the wider Mediterranean well before his 13th-century travels, including a reference to Sicilians making dried, string-like pasta in the 1150s, decades before Polo. His own travel account mentions noodles in Asia in a way that suggests he already knew what pasta was; he was comparing, not discovering. The 'Polo brought pasta home' story seems to trace to a 1929 article in an American macaroni industry magazine, basically marketing that hardened into folklore. Pasta and Chinese noodles likely developed independently, both being sensible things to do with wheat or rice flour. So the noodle did not ride into Italy on the Silk Road. It was already simmering at home, and a trade magazine wrote it a better backstory.