deutsches glasmalerei-museum

If you're staying in this area of NRW and like art, it's worth a trip here. The front desk has a number of books on glass artwork available, though some are pricey, aswell as a large collection of free magazines and leaflets on culture and arts in the Aachen, Limburg, and Dueren regions. Guided tour available with short explanations of the lives and works of some of the artists.