Completely surreal, this former German DAG explosives factory hidden in the Bydgoszcz Forest looks like an extremely sinister hobbit village, with small, moss-covered buildings spread over an area of 23km² (the building in the picture up top is one of the few large ones). In 2011, eight factory buildings - apparently just 1% of the entire complex! - were turned into a state-of-the-art museum detailing the history of dynamite and nitroglycerin, the tales of DAG, and the realities faced by 10,000 forced labourers who toiled here during the war. Due to COVID-19 restrictions, English-language group tours are not available until further notice.

To get here, take bus 56 from 'Nowy Rynek' to 'Glinki', then 68 from 'Glinki' to 'Park Przemysłowy / Exploseum', then follow the signs; or use bydgoszcz.jakdojade.pl for the most up-to-date bus schedules.