Which city in Switzerland is a transportation center Rhine?

Basel is located in the extreme northwest of Switzerland, on the border with France and Germany, divided by the Rhine River into Kleinbasel and Grossbasel. Basel has been a trading and transportation center since the Middle Ages, and it continues to be an important economic center today. The city is home to several major banks and financial institutions, as well as a number of international trade fairs. Basel is also a major transportation hub, with an international airport, a major railway station, and a port on the Rhine River.