mentioned documentarily in 1233. Nowadays, Alstädten and Burbach are one district named Alstädten-Burbach. Berrenrath Berrenrath was first mentioned documentarily in 922. The resettlement of Berrenrath onto a now-abandoned brown coal mine was decided on February 27, 1952. This was necessary due to mining plans of the Roddergrube AG. The resettlement was completed in the September 1995. Efferen The Efferen district had its first documentary mention as a pastoral town in 1189. The Catholics first humbled themselves with a plain wooden church. On June 6, 1869, this church was replaced with a solid building, consecrated by auxiliary bishop Baudri. On October 31, 1944, large parts of Efferen, including the church and the hospital, were destroyed in an air raid; thirty-six people died. On December 20, 1953, Boue, a member of the church assembly, consecrated the newly built Evangelic church, designed by architect Jürgen Körber. Two years later, on November 25, 1956, a new Roman Catholic church, which was designed by the Cologne architects Wolfram Borgard and Fritz Volmer, was consecrated by auxiliary bishop Wilhem Cleven. Fischenich Fischenich was first mentioned documentarily in 1189. Gleuel Gleuel was first mentioned documentarily in 898. Hermülheim Hermülheim was first mentioned documentarily in 943. In Hermülheim the town's two grammar schools are located: the Ernst-Mach-Gymnasium and the Albert-Schweizer-Gymnasium. Hürth (Alt-Hürth) Hürth was first mentioned documentarily in 1185. Hürth-Mitte The building of the residential area Hürth-Mitte, that was begun in 1964 according to a decision by the municipal council in 1960, had the aim of establishing a "city centre" in the approximate geographic centre of Hürth. The decision was evidently benefitted by the constantly raising population in those times. This was partially completed by 1985, with the new town hall and community centre having been erected. Hürth-Mitte is also the site of the Hürth Park, a shopping mall, which serves as the town's economic and social centre. Hürth-Mitte is not a district for itself, but officially belongs to Hermülheim. Kalscheuren Kalscheuren was first mentioned documentarily in 1305. Kendenich Kendenich was first mentioned documentarily in 941. Knapsack Knapsack, its first documentary mention in 1566, started to emerge into a notable town after 1900 due to establishment and development of industry (1906 the Knapsack-Griesheim AG, later known as the Hoechst AG; 1913 construction of the brown coal power plant Goldenberg-Werk) Due to environmental constraints, 4,000 citizens had to be resettled between the years 1969 and 1979. Sielsdorf Sielsdorf was