Basel is interesting city. The city is facing along the border of Germany and France. The area is around the border is very interesting.
I can imagine people life is unique. We can easily reach to outside of the border of Switzerland by Basel city tram lines.
For example let me show you below photo. The center of the bridge is a border between Germany and France.
In below photo, the left side of the board is in Germany, and right side is in France. And the top left area of the river is in Switzerland.
As Switzerland's food and restaurant are more expensive than Germany and France, Big shopping mall is in Germany and in France near the border. And maybe people living in Basel are using the shopping mall.
And maybe people living in Germany and France are working in Basel, Switzerland. This can be happened.