Frankfurt is the largest city in Hesse, Germany, and the fifth largest city in Germany. It has the largest airport and railway hub in Germany and is an important industrial, commercial, financial, and transportation center in Germany and even Europe. Frankfurt International Airport has become one of the most important international airports and air transportation hubs in the world, and is the second largest airport in Europe after London Heathrow International Airport. It is located downstream of the Maine River, a tributary of the central Rhine River, with an area of 248.31 square kilometers and a population of approximately 670000. Frankfurt has a mild climate, with humid spring and autumn seasons, hot summers and cold winters, with significant temperature differences between summer and winter. The average temperature in January is -1.5 ℃, and the average temperature in July is 17.5 ℃. The chemical industry is the most developed in Frankfurt, followed by electronics and machinery. In terms of humanities, this is the birthplace of the famous German poet Goethe, with Goethe University, museums, and more. During World War II, it was severely damaged and rebuilt into a modern metropolis after the war. Known as "Manhattan by the Rhine". Today, in addition to the rapid development of the chemical, electronic, and mechanical industries, the tertiary industries such as transportation, finance, and exhibition industries are also thriving. The urban area has changed its old style, with numerous high-rise buildings, and Frankfurt has become an internationally renowned metropolis.

Frankfurt is an important industrial and commercial, financial services, and transportation center in Germany and even Europe. The city has over 324 banks, operating 85% of Germany's stock trading and the largest international car show in Europe. The headquarters of the Federal Bank of Germany and the European Central Bank are located here. The headquarters of the Federal Bank of Germany, the European Central Bank, and other major banks are mostly located here. According to the latest Global Financial Center Index (GFCI17) released by the City of London, Frankfurt is the 19th international financial center in the world.