Leavenworth was officially incorporated on September 5, 1906. A small timber community, it became the headquarters of the Great North Railroad in the early 1900s. The railroad relocated to Wenatchee in the 1920s, greatly affecting Leavenworth's economy. The city struggled until 1962, when the Project LIFE (Leavenworth Improvement for Everyone) Committee was formed to transform the city into a mock Bavarian village to revitalize its economy. Leavenworth's Oktoberfest celebration is one of the most attended outside Munich, Germany.