Rüeggisberg Priory - The original foundation of uncertain date, made by Lütold of Rümligen, was turned into the first Cluniac house in the German-speaking world by Cuno of Siegburg and Ulrich of Zell in about 1072, when the first cells were built.
the Siegburg–Olpe railway, the historic Agger Valley Railway that is now only open between Overath and Dieringhausen,
Initially Johann Lair von Siegburg, he was born at Sieglar, near Troisdorf in Germany, and was educated at the University of Cologne.
The line has four stations, Siegburg/Bonn, Montabaur, Limburg Süd and Frankfurt Airport.