Since the 6th millennium BC, the Stuttgart area has been an important agricultural area and has been host to a number of cultures seeking to utilize the rich soil of the Neckar valley. The Roman Empire conquered the area in 83 AD and built a massive castrum near Bad Cannstatt, making it the most important regional centre for several centuries. Stuttgart's roots were truly laid in the 10th century with its founding by Liudolf, Duke of Swabia, as a stud farm for his warhorses. Initially overshadowed by nearby Cannstatt, the town grew steadily and was granted a charter in 1320. The fortunes of Stuttgart turned with those of the House of Württemberg, and they made it the capital of their county, duchy, and kingdom from the 15th century to 1918. Stuttgart prospered despite setbacks in the Thirty Years' War and devastating air raids by the Allies on the city and its automobile production during World War II. However, by 1952, the city had bounced back and it became the major economic, industrial, tourism and publishing centre it is today.
Stuttgart is unusual in the scheme of German cities. It is spread across a variety of hills (some of them covered in vineyards),valleys (especially around the Neckar river and the Stuttgart basin) and parks. This often surprises visitors who associate the city with its reputation as the "cradle of the automobile". The city's tourism slogan is "Stuttgart offers more". Under current plans to improve transport links to the international infrastructure (as part of the Stuttgart 21 project), the city unveiled a new logo and slogan in March 2008 describing itself as "Das neue Herz Europas" ("The new Heart of Europe"). For business, it describes itself as "Where business meets the future". In July 2010, Stuttgart unveiled a new city logo, designed to entice more business people to stay in the city and enjoy breaks in the area.
Stuttgart is a city with a high number of immigrants. According to Dorling Kindersley's Eyewitness Travel Guide to Germany, "In the city of Stuttgart, every third inhabitant is a foreigner." 40% of Stuttgart's residents, and 64% of the population below the age of five, are of immigrant background.