Tips on traveling between Paris and Köln every week.
Hey guys I travel every week between Paris and Köln hbf through the Eurostar and I usually tend to buy my tickets many months in advance to get the cheapest price. I would like to know if there's an unlimited pass since I know the ICE also transits between Paris and Köln through Frankfurt and Mannheim, or if you have some other tips to travel between Paris and Köln for cheaper and whenever I want for example being able to travel to Köln hbf tomorrow or in 2 days without having to pay like 300€ the round trip train ticket ? #local source