Alt St. Alban was first mentioned in documents in the 12th century, but was rebuilt several times in the Middle Ages and early modern times. The original Romanesque church of Alt St. Alban was destroyed in the war and remains an imposing ruin, as it was decided not to rebuild it after 1945. Instead, a memorial to the dead of the two world wars was erected and consecrated in 1959.
Inside is a copy of the sculpture 'Mourning Parents', the original of which was created by Käthe Kollwitz in 1932 in memory of her fallen son Peter. The slightly enlarged copies of the original figures were created by Mataré students Joseph Beuys and Erwin Heerich. The memorial for prisoners of war at the front of the ruins is also impressive. In 1964, the Bruder Konrad Chapel on the ground floor of the tower, which was decorated by Peter Hecker and Will Thonet, was finally consecrated. It also contains a crescent moon Madonna from the 16th century.