[3] The district of Hahnenklee also comprises the former village of Bockswiese, both are mining settlements originating from the 16th century that were incorporated in 1972.
In the Nazi time, Hahnenklee was home to many houses of the NS organisation “Mother and Child” - in their facilities, more than 3600 children were born.
Shortly after the war, in the former mothers home of the NSV 18 Latvian children died from starvation - the circumstances were never cleared completely.
Hahnenklee is chiefly known for the Protestant Gustav Adolf Stave Church, built by the architect Karl Mohrmann (1857-1927) in 1908.
The smaller Catholic Church Saint Mary in the Snow (Sankt Maria im Schnee) was built in 1975.