Gaswerk, Industrial heritage site in Weimar, Germany

The Gaswerk is the former gasworks at Schwanseestraße 92, built in 1908 as Weimar's second and more powerful gas plant. The complex is a listed monument; its gasometer was demolished in 1987, while the water tower survives. The old plant at the freight station on Ettersburger Straße, opened in 1856, has left no structural remains and few photographs.

The plant traces to the Gasbereitungs-Gesellschaft founded on 26 June 1854 on the initiative of mayor Wilhelm Christian Friedrich Bock, and gas production began in January 1856. In 1857 it ran Weimar's first steam engine, of 1.5 horsepower. A larger works opened at Schwanseestraße 92 in 1908, replacing the freight-station plant, which stopped production in 1964; its gasometer was demolished in 1987.

The former Schwanseestraße gasworks is a listed monument and now serves as a project workshop and venue for cultural events. The site is run by the Schwansee92 initiative, which publishes its programme online. Visitors encounter the preserved water tower, a remnant of the municipal gas, water and electricity works formed in 1920.

The former gasworks stands at Schwanseestraße 92, in the south of Weimar, and is listed as an individual monument. It is now run as a project workshop and cultural venue, so visits depend on the events held there rather than fixed opening hours. The preserved water tower is the landmark to look for when finding the site.

The plant at the freight station ran Weimar's first steam engine from 1857, rated at 1.5 horsepower. The city's gas lamps were already burning by the end of 1855, before the works officially entered service in January 1856.