St. Mary's Church
St. Mary's Church is the oldest of the three Roman Catholic parish churches in Biel. On the outside, the church adopts neo-Gothic forms; inside, it is one of the few Swiss churches in the expressionist style. The church building consists of an upper church, built by the architect Adolf Gaudy in 1927-1929, and a crypt, formed by the former church, built in 1867-1870 by the architect Wilhelm Keller.