Swiss franc
The Swiss franc is the currency and legal tender of Switzerland and Liechtenstein and also legal tender in the Italian exclave of Campione d'Italia. Although not formally legal tender in the German exclave of Büsingen am Hochrhein (the sole legal currency is the euro), it is in wide daily use there; with many prices quoted in Swiss francs. The Swiss franc is the only version of the franc still issued in Europe.
Basel Badischer Bahnhof
The Badischer Bahnhof is located on Swiss territory, but due to the 1852 treaty between the Swiss Confederation and the state of Baden (one of the predecessors of today's Germany), the largest part of it (the platforms and the parts of the passenger tunnel that lead to the German/Swiss checkpoint) is treated as an inner-German station and is operated by the Deutsche Bahn. The shops in the station hall, however, are located in Switzerland, and the Swiss franc is used as the official currency there (although the euro is universally accepted).