Christmas markets in Europe. Altes Schloss (the Old Castle mostly dating from the late 15th century, some parts date back to 1320. Lindau lost its status as an Imperial Free City in 1802, after the dissolution of the Holy Roman Empire. 52 The Thirty Years' War devastated the city, 53 and it would slowly decline for a period of time from then. There are also a number of road tunnels under intersections in the center of Stuttgart. Economic migrants, called " Gastarbeiter from Italy, and later Greece and Turkey but primarily from Yugoslavia, came flocking to Stuttgart because of the economic wonder called the " Wirtschaftswunder " unfolding in West Germany. Twin towns edit See also: List of twin towns and sister cities in Germany Lindau is twinned with: Serpukhov (Russia) Chelles (France) Lindau was twinned in 1964 with the City of Chelles in France, which was initiated by the returned French soldiers after World War. Retrieved b c d e f g h i j k "Stuttgart Städtepartnerschaften".