Let´s get lost in Aachen! Here is what it is about:
At this time we are heading to Aachen to take a tour in the historical center of the city and visit the Christmas Market as well. Another option is to visit the Lindt Factory Outlet. :)
The day ticket for North Rhine-Westphalia for one person is available for 28,50 euros. The group ticket costs 41,00 euros for up to 5 other people. (SchönerTagTicket NRW 5 Personen)
There are two trains in every hour in both directions. My suggestion would be:
Köln Hbf - Aachen Hbf / Sa,[masked] / Departure at 10:15 / Arrival at 11:07
Aachen Hbf - Köln Hbf / Sa,[masked] / Departure at 15:51 / Arrival at 16:44
Meeting point: Cologne Central Train Station (Hbf) in front of the Douglas shop at 09:45 am.
This meet up will take place in any weather conditions including snow!