Stiftskeller of Austria is the oldest restaurant in the world. Located in Salzburg, Stiftskeller was built in the year of 803 inside St. Peter's Abbey. Friar Albuin, a scholar and a follower of Charlemagne, was the first to record the existence of the restaurant. After centuries of refurbishment and extension, Stiftskeller has maintained its Baroque style. It has served countless members of royalty, dignitaries, and celebrities. Its "Mozart Dinner" is a weekly special you should not miss if you visit Stiftskeller.