In the Gernheim Glass Tower from 1826, one of the last two preserved buildings of its type in Germany, visitors experience how glassmakers produce vessels from the glowing mass of glass with a pipe, wooden forms and scissors. Next to this the glass objects are then refined via polishing and engraving. Large parts of the early-industrial factory village of Gernheim in today's Petershagen have been preserved – in addition to the Glass Tower housing for workers that are some of the oldest in Westphalia, the residential house of the former colliery owners and the old basket weaving site can be visited. On several storeys visitors can find out about the production of hollow glassware and sheet glass and can also take a trip through the history of everyday life: around 2,000 exhibits ranging from preserving jars to impressive trophies demonstrate the various uses the glass vessels were put to.
The collection of the LWL-Industriemuseum for (early) industrial glass manufacture consists of approximately 40,000 objects. Included are glassmaker tools, machines, pictorial and written documentation, glass products for everyday use and from the arts and crafts as well as contemporary works of glass art.
The passed-down correspondence between the Gernheim glassworks master Josef Kunkel and the Prussian royal court as well as glass objects with commemorative, Prussian patriotic themes from the time of the German Empire document in particular the history of Prussia within the concept of glass production.