In the north of the city is Duisburg’s most original attraction, the Landschaftspark Duisburg-Nord, until 1985 a giant steelworks belonging to the Thyssen group. Since its decommissioning, nature has reclaimed large parts of the two-square-kilometre site, with rose gardens planted in former ore hoppers and trees growing up and through rusty blast furnaces, one of which can be climbed for a vertigo-inducing – though perfectly safe – closer look. The atmosphere is eerie, almost post-apocalyptic, yet it works, both as a park and as an awe-inspiring piece of industrial archeology. It’s also a clubbing venue and activity centre, with alpine climbing gardens and Europe’s largest artificial diving centre housed in a flooded gasometer. At weekends a stunning light installation turns it into pure science-fiction after dark.