Kelmis (from calaminis: calamine-bearing rocks) lies right in the North of the DG. At the three countries triangle nearby the frontiers of Belgium, Germany and the Netherlands meet. Not to be missed: the Nature reserve with its calamine violets, the Göhl Valley Museum and the Hammerbrücke (Hammer Bridge) in Hergenrath. This bridge was built in 1840 as part of Belgium's first external rail connection. Destroyed in World War II, it has now been restored and renovated for the new high-speed rail line, the TGV.