Basel
Basel is the third largest city in Switzerland, located near France and Germany. In fact, you can drive from Basel's city center to France or Germany in 5 minutes. It's almost there. You wouldn't even recognize you're in a foreign nation if it weren't for border control. But Basel is known for something else: it is the capital of museums in Switzerland, with over 40 of them. It is rich in culture and art, and it has a very active lifestyle. Basel has art, cartoon, paper, environment, history, firefighting, Jewish heritage, and many other museums.
What is the best fall activity? What about taking a leisurely stroll along the Rhein river and visiting a museum located right on the river's banks? There is a well-known Tinguely museum where you may see strange yet interesting moving sculptures. It is the world's only museum of its sort.