The little known route from Biel via Gaicht to the Twannbach Gorge, and further to Twann, is an excursion into Geology. There are numerous large and small boulders along the scenic hiking trails.
Biel has been an industrial and watchmaking centre since the 19th century.
The Aare is the longest river lying entirely within Switzerland. Between Biel and Solothurn, it offers perfect conditions for canoeists.