Why go
Use the river and the old town as your first bearings, then choose a focus. Basel Minster and the Town Hall give a short introduction to civic history; Kunstmuseum Basel offers the deeper art visit. Riehen's Fondation Beyeler and architecture in Weil am Rhein belong to the wider region and reward a separate outing.
The full story
Basel's position at the meeting of three countries is visible in the shape of a visit. The Rhine divides the central city into Grossbasel and Kleinbasel, while places just beyond the Swiss border extend an architecture or museum day into France or Germany. That regional setting is more useful to a traveler than a list of border statistics: allow time for a nearby town only after deciding what you want to see in Basel itself. German is the official language, and local speech is a form of Swiss German. The University of Basel, founded in 1460, helps explain the city's long connection to learning and collections. Its art and cultural institutions grew alongside a later chemical and pharmaceutical economy. Start on Münsterhügel to grasp the older city and its river setting. From there, the painted Town Hall and Marktplatz draw you toward civic Basel. For a museum-focused day, select a collection by subject instead of trying to cover the full range of venues.