Strasbourg has historically been a overlapping area of ethnic activity. From the original Celtic to Gaul, Germans and later Frank and Charlemagne, these peoples have left their footprints in Strasbourg. Since the mid-19th century, Germany and France have become the focus of long-term competition. After World War II, with its unique geographical advantages, several EU cooperation organizations such as the European Commission, the European Court of Human Rights, the European Anti-Corruption Agency and the European Parliament have established their headquarters in Strasbourg. It is a city with German and French characteristics. The city is serious and serious in Germany, and it has French romance and refinement. The wooden-barred houses stand scattered on the historic stone road. German style of simplicity is also gradually rendered by the French people's style.