Kaiserslautern is a city in southwest Germany, located in the Bundesland (State) of Rhineland-Palatinate (Rheinland-Pfalz) at the edge of the Palatinate forest (Pfälzer Wald). The historic centre dates to the 9th century. It is 459 kilometres from Paris, 117 kilometres from Frankfurt am Main, and 159 kilometres from Luxembourg. Kaiserslautern is home to 99,469 people.