Aachen is a city in Nordrhein-Westfalen, Germany, close to the Netherlands and Belgium.
Apparently there is a somewhat official hitchhiking spot at Europaplatz.
Hitching Out
<map lat='50.79269814077799' lng='6.1571502685546875' zoom='12' view='0' float='right' width='400'/>
West towards Netherlands, Belgium, East towards Köln
There is a nice gas station, Aachener Land, on the A4, not too far east of Aachen. It's good to get into the Netherlands and Belgium, and on the other side it's probably good to go anywhere in Germany. The fastest way to get there is by taking bus #52 from the Busbahnhof. It stops directly on the service area.
There are a lot of police controls around Aachen, so be sure not to bring drugs from the Netherlands to Germany, as you will probably be controlled.