The four cities in Switzerland that are represented in the crossword solutions are Basel, GENEVA, Zurich, and Lausanne. Basel is the third-largest city in Switzerland and is located in the northwest of the country. It is known for its cultural attractions, such as the Basel Zoo and the Kunstmuseum Basel. GENEVA is the second-most populous city in Switzerland and is located in the southwest of the country. It is a major financial center and is home to the headquarters of many international organizations, such as the United Nations and the Red Cross. Zurich is the largest city in Switzerland and is located in the north of the country. It is a major financial and cultural hub and is home to many universities and museums. Lausanne is the fourth-largest city in Switzerland and is located in the southwest of the country. It is known for its picturesque lakeside setting and is home to the International Olympic Committee.