The church of San Eufamia had to be totally rebuilt in 1870 by the architect Enrico Terzaghi after being practically destroyed during an earthquake. It is believed to be one of the oldest religious sites in Milan. Founded, it is thought, probably by the Archbishop S. Senatore, but its presence appears in documents only from the 9th Century. It has however been changed and transformed many times over the centuries. Inside the church the main items on display are the works of art from the Leonardo school.