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 (285 mi) from Paris, 117 kilometres (73 mi) from Frankfurt am Main, and 159 kilometres (99 mi) from Luxembourg.
Kaiserslautern is home to 99,469 people. Approximately 50,000 NATO military personnel inhabit the city and its surrounding district (Landkreis Kaiserslautern), and contribute approximately $1 billion annually to the local economy. These are mainly Americans, who form the largest US-settlement outside the territory of the United States and often call the city K-Town.