The Oldest Restaurants in the World, From Berlin to Boston

"The earliest mention of St. Peter Stiftskulinarium was in an 803 AD letter to Charlemagne, emperor to the Holy Roman Empire (maybe someone ought to call Guinness World Records). The spot has purportedly served the likes of Wolfgang Amadeus Mozart and Christopher Columbus. The kitchen, though, has kept up with the times, unafraid of transforming the menu to please modern palettes. Today the restaurant serves refined Austrian classics and nouveau European dishes using locally grown ingredients. And when guests head to sit down and enjoy your meal, they have have 11 rooms of a former monastery to choose from, including vaulted chambers of exposed brick."