By road -it is also possible to reach Wissen by road in one day. Cross the Chanel by ferry or Eurotunnel to Calais then take the Autoroute (toll free).to Lille and Tournai. From there to Liège, either via Charleroi or Brussels and enter Germany at Aachen heading towards Cologne where again there are two options. From south of Cologne head towards Siegburg then Altenkirchen to Wissen, or pass to the east of Cologne and pick up the A4 Autobahn towards Olpe. Leave this motorway about halfway along its length near a town called Gumersbach and head due south to Wissen. This is the route preferred by the Association. A leisurely journey might include an overnight stop in the Ardennes in Belgium or along the Rhine.
Recently many towns in Germany have introduced low emmission zones and cars must display permits showing they meet low emmission standards. In some towns diesel cars are banned unless they meet they meet the Euro 5 or even the more stringent Euro 6 emmission standards. Check the status of your car when planning your trip.
By rail – Letchworth to Kings Cross then walk to St Pancras to catch Eurostar to Brussels; change there for a train to Cologne, then another train to Wissen.
By air –there are flights from Stansted to Cologne with Eurowings (Germanwings) and Ryanair and Gatwick to Cologne with Easyjet. It is possible to get from the airport to Wissen by train.