title: Hennef (Sieg)
text: Hennef (Sieg) () is a town in the Rhein-Sieg district of North Rhine-Westphalia, Germany. It is situated on the river Sieg, approx.  south-east of Siegburg and  east of Bonn. Hennef is the fourth-biggest town in the Rhein-Sieg-Kreis (i.e. district). It is the site of the 15th-century castle, Schloss Allner, next to the Allner See. Within Hennef is the town of Stadt Blankenberg, with the castle of Blankenberg.
  
  Hennef is also known as the "City of 100 villages".
  
  Twin towns – sister cities
  
  Hennef is twinned with:
   Banbury, England, United Kingdom (1981)
   Le Pecq, France (1997)
   Nowy Dwór Gdański, Poland (2001)
    Foley, United States (2022)
  
  Trivia
   The first calibratable automatic weighing scales in the world were invented by Carl Reuther in Hennef
   Hennef's current district of Geistingen was first mentioned in a document from 885. Hennef itself was first mentioned in 1075 as "Hannafo"
   The national football team sometimes trains here; at the FIFA Confederations Cup in 2005 the Argentina national football team stayed here.
   Football teams Tura Hennef and F.C. Geistingen amalgamated in 2005 to become Hennef '05
   The song What Is Love by Haddaway was written and produced in Hennef
  
  Notable people
  Annika Zeyen (born 1985), Paralympic champion (wheelchair basketball and Handbike)
  Joseph Dietzgen (1828–1888), philosopher
  Hank Levine (born 1965), movie director, producer
  Walter von Loë (1828–1908), Prussian field marshal
  Ranga Yogeshwar (born 1959), scientist
  Kim Petras (born 1992), pop singer and songwriter
  
  References
  
  External links
  
  Stadt Hennef – Official website 
  John Rosauer, "Erinnerungen an den Krieg an der Sieg." "Memories of War on the Sieg," an account of the destruction of Hennef by Allied forces during World War II, based on interviews with survivors.
  
  Rhein-Sieg-Kreis