Stuttgart is the capital of the south-west of Germany Baden-Württemberg. The city is considered the manufacturing center of the country. Here are the headquarters and museums of Mercedes-Benz and Porsche. There are many green areas in Stuttgart, especially around the center. The most popular parks are Rosenstein, Schlossgarten and Killesberg. To the northeast of the Palace of Rosenstein is "Wilhelm", one of the largest zoos and botanical gardens in Europe. The population of the city is 630,000 people.