- Basel-Country - Capital: Liestal - Population: 281112 - Surface (km²): 518 - Official language: German - Located at the gateway to the city of Basel, the canton of Basel-Country is full of beautiful landscapes, impressive natural sites and cultural jewels. In the footsteps of the Romans, during a cruise on the Rhine or on a hike or bike ride in the Jura, discoveries are legion in the countryside of Basel.