In 1914, workers in a quarry detected a grave with a 50-year-old man, a 20-25-year-old woman and a dog. Carbon-14 datings estimated an age between 13,300 and 14,000 years. A study of the mitochondrial genome sequences in 2013 showed that the animal is indeed Canis lupus familiaris, not a wolf.
Oberkassel was first mentioned as Cassele in 722/723 and as Cassela in 1144. The name Oberkassel refers to a Roman fortification; in the course of time "Romerkastell" (Roman castle) became "Oberkassel". Oberkassel absorbed the previously separate settlements of Berghoven (mentioned for the first time in 873), Büchel (mentioned for the first time in 1202), Broich (mentioned for the first time in 1306) and Meerhausen (mentioned for the first time in 1442).
The Bundesstrasse 42 (federal highway 42) traverses the south-eastern part of Oberkassel within an 500 m (1,600 ft) long tunnel. It has an exit near Ramersdorf.
Oberkassel is home of several divisions of the DLR, the German Aerospace Center.
- Gottfried Kinkel, * August 11, 1815 in Oberkassel, † 13 November 1882, poet also noted for his revolutionary activities
- Ernest, Count of Lippe-Biesterfeld, * 9 June 1842 in Oberkassel, † 26 September 1904, head of the Lippe-Biesterfeld line of the House of Lippe, regent of the Principality of Lippe
- Bürgerverein (citizens' organisation www.buergerverein-oberkassel.de (German)
- Heimatverein (historical society) www.heimatverein-oberkassel.de (German), with lots of old photos (click on "Galerie")
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