With human traces dating back 50,000 years, Bonn is considered one of the oldest cities in Germany (History). The city of Bonn “celebrated its 2000th anniversary in 1989, based on the date of its first written mention by the Roman writer Florus in 11 BC” (History). “Friedrich Schlegel once called Bonn a “friendly” city and it has been a friendly city throughout the 2000 years of its existence, dating back to the founding of the Drusus fortress in the year 13 BC (Schleifer).” Around 11 BC, a Roman army placed a unit in what is now the city center. However, before this happened, the army moved members of a Germanic tribe, the Ubii, to Bonna, which is Latin for Bonn. After many years, the army liberated the small camp linked to the settlement of Ubii. Around the 1st century AD, the Roman army then settled north of the emerging Bonna, in what is now the Bonn-Castell section, to build a military fort called Castra Bonnensis, meaning Fort Bonn. This fort was used until the 5th century AD and continued to exist into the Middle Ages, when the fort was called Bonnburg. The structures were not of much use until the Frankish kings who were in control at the time decided to use them as part of the city walls in the 13th century. The barbarian invaders destroyed much of the original city of Bonna, and when the time came for the barbarians to take over, the troops switched allegiance to save themselves from certain death. It is from these barbarians that the medieval city of Bonn (Bonn) began to arise. “One well-documented event was the martyrdom of two Theban legionaries. The Theban Legion was an all-Christian legion, which refused to worship the emperor as a god. As punishment, the commander of the Theban Legion, Ma...... middle of paper ......rk: Berghahn Books, 2010. Print."Bonn." Wikipedia. Wikimedia Foundation, April 25, 2014. Web. April 27, 2014. "Bonn: A Brief History." A brief history of Bonn. Np, nd Web. April 27, 2014. "Bonn Travel Guide." Travel guide. Np, nd Web. 28 April 2014.de Bruyn, Gerd . Post Tower: Helmut Jahn, Werner Sobek, Matthias Schuler. Berlin; Boston: Birkhauser Verlag, 1997. Print."Drachenfels (Siebengebirge)." Wikipedia. Wikimedia Foundation, 18 April 2014. Web. 28 April 2014.WebsiteFlagge, Ingeborg. Architecture in Bonn in 1945: Bauten in der Bundeshauptstadt und ihrer Umgebung. Bonn: Rohrscheid, 1984. Print. Grosser, Dieter. German unification: the unexpected challenge. Oxford: Berg, 1992. Print."Hans Riegel Bonn = HARIBO - A traditional brand with history." Hans Riegel Bonn = HARIBO - A traditional brand with history. Np, nd Web. April 28. 2014.