Basel port has been active since the Middle Ages in traffic between the Mediterranean and the North Sea, Swabia and Burgundy, and has found a new dynamism since the start of the 20C, after having been eclipsed for a time by the construction of the major Alpine roads and railways. In summer, excursions including a visit of this port, which is mainly used for importing goods, are made on the Rhine and the Kembs canal.

A small lake and numerous stalagmites, some of which are a million years old, are hidden in this cave. Over the years, the concretions have acquired amusing names such as the duke's tomb, the fairy-tale empire and the organ.

The building dates from 1552 and is built in Rhone Renaissance style. Three of the walls are decorated with fine paintings and allegories. On the right side of the building hangs a grimacing stone mask, a copy of the Klapperstein, weighing 12 to 13kg, that used to be hung around the necks of scandalmongers who were condemned to riding around town on a donkey, sitting back to front. The building also houses the History Museum.

St Martin's protestant church was too small - so they built this church between 1674 and 1676 to accommodate worshippers. It is now a conference centre.