In Turin, beneath the arcades of Piazza Castello, there's a place where history can literally be felt. It's Caffè Mulassano, a custodian of beauty and memory since 1879, which in 2026 celebrates the centennial of the tramezzino. The quintessential Italian sandwich was born at Caffè Mulassano and has over time become one of the most beloved and imitated snacks in the world. The centennial is an opportunity to retrace the tramezzino's Turin origins, its connection to America, and the role it has played in Italian gastronomy, through signature creations and a map of the locations that still serve it today throughout Italy. Inside Caffè Mulassano, a plaque reads: "In 1926, Mrs. Angela Demichelis Nebiolo invented the tramezzino." And so it was: a hundred years ago, the Nebiolos, returning from the United States, invented this snack to rejuvenate the restaurant. Initially served with an aperitif, then as a quick lunch, it was what Gabriele D'Annunzio called "tramezzino" a few years later. Among the more than thirty different flavors, the most original and sought-after are the famous lobster tramezzino, the truffle tramezzino, and the bagna cauda tramezzino.