Frechen, Germany is a city with a rich history and a thriving urban exploration scene. Our crowdsourced list of urbex spots includes abandoned factories, derelict buildings, and other off-limits areas that offer a glimpse into the city's industrial past and urban decay. From the crumbling remains of the old city wall to the overgrown ruins of the former Frechen Castle, these hidden gems are waiting to be discovered and explored by adventurous souls.

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