page_title: Regional Museum "Leon Wyczółkowski"
section_title: Open-air museum of industrial architecture
hierarchical_section_title: Regional Museum "Leon Wyczółkowski" / Museum departments and branches / Open-air museum of industrial architecture
caption_attribution_description: Polski: Leon Wyczółkowski, autoportret w cyklistówce English: Selfportrait of Leon Wyczółkowski wearing a flat cap
context_page_description: The Regional Museum "Leon Wyczółkowski" is an ensemble of cultural institutions which have been first created in 1923 in the city of Bydgoszcz, Poland.
context_section_description: In autumn 2007, the Museum in Bydgoszcz took over under its supervision a complex of Nazi-factory buildings, located in the forest, in the south-east of the city. The ensemble was built during World War II in order to produce explosives and ammunition for the German war effort. It was manned by thousands of prisoners of war and forced laborers from all over Europe, under the supervision of German specialists.
  The most valuable part of the complex is NGL-Betrieb, where the nitroglycerin plant stands. The individual buildings are still preserved and connected by a near-2 kilometres (1.2 mi) long network of overground and underground tunnels. In 2009–2011, a project was launched to revive the area, called Open-air museum of industrial architecture with an underground tourist route and the Museum of Armaments Works DAG Fabrik Bromberg. The outcome of the programme was the creation of the Exploseum, an open-air museum of industrial architecture combined with a museum of 20th century technology.
caption: Selfportrait of Leon Wyczółkowski in flat cap
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