The Gaskokerei Dimitroffstraße, also known as the IV. Städtische Gasanstalt or Gaswerk IV, was a significant gas production facility in Berlin’s Prenzlauer Berg district. It began operations in 1873 and was in service for 108 years until its closure in 1981, making it the longest-operating gasworks in Berlin. After the closure, the site was to be transformed into the Ernst-Thälmann-Park, a residential and recreational complex.