and the western side of the market square. The fire is thought to have been started by a careless French sentry. From 1937, the German-Jewish composer Walter Braunfels avoided Nazi persecution by living in near-anonymity in Überlingen. There he composed music (including three large-scale stage works) and made a living teaching music to the local children during the course of the Second World War. Post World War II to present In 1972, Überlingen became the first city in the German Federal Republic to institute a tax for residents which obtain a second home in the city (), which became known as the so-called Überlingen Model. With the administrative reform of 1973, Überlingen lost its status as the seat of the County of Überlingen (). The major part of it was merged with the County of Tettnang () to Lake Constance County (Bodenseekreis). In January 1993 Überlingen became a great district city (Große Kreisstadt) granted by the state administration of Baden-Württemberg. In March 1980, Winifred Wagner, the widow of Siegfried Wagner, died at Überlingen. Überlingen as a resort today By the 1950s, Überlingen had established itself as a premier tourist destination on Lake Bodensee, particularly for those interested in the health cure. Überlingen was Baden-Württemberg's first Kneippheilbad, a homeopathic cure using water therapy, diet, aroma therapy, and exercise, based on the principles of health developed by Sebastian Kneipp. The city's shore promenade ends at the new health resort (opened 2003), the Bodensee Therme (spa). In 2005, the city and its collaborators, Deisendorf and Lippertsreute, won the gold medal in the competition, Our City Blooms (Unsere Stadt blüht auf). The city also provides numerous walking paths and is located on the long Jubiläumsweg, an historic landmark and nature trail through the Bodensee region beginning at Kressbronn and ending at the Überlingen Therme. Uberlingen has also joined the Cittaslow movement to protect itself from over development. In 2012 the city banned GMOs and pesticides. 2002 mid-air collision The city received international attention in July 2002 with the mid-air collision of Bashkirian Airlines Flight 2937, a Tupolev Tu-154, and DHL Flight 611 (a Boeing 757-23APF cargo jet manned by two pilots) on 1 July 2002. In this incident, the passenger plane carrying 69, mostly children and a few adult chaperones who were travelled to Spain collided with a cargo plane in mid-air, at about . The debris fell throughout the northern Überlingen suburbs. Seventy