Scheme 1, German city tour (train)
The first weekend.
Saturday: Stop in Cologne and Bonn for one day. Same day round trip.
Sunday: a day in Ruhr, Dü sseldorf. Same day round trip
The second weekend.
Saturday: one day in Berlin, living in Berlin.
Sunday: Return trip, choose one or two cities to get off and play.
Option 2, European city tour (tourist bus)
The first weekend-Paris
Friday: At midnight, Cologne boarded the tourist bus and went to Paris. Live in a car
Saturday: downtown Paris, midnight, the bus returns to Cologne.
Sunday: Go back to Cologne in the morning. On the whole, I'm tired and rested.
The second weekend-Amsterdam
This trip is similar to going to Paris.
Plan 3: Comfortable peripheral travel (train)
The first weekend
Saturday, one day in Bonn, including Kony Winter, Bud Goldenberg, etc. (Consider taking a Rhine cruise).
On Sunday, one day in Cologne, including Brewer and others.
The second weekend
Saturday, koblenz, (think of the Rhine cruise)
On Sunday, find a small town, such as Badminster Elf, relax, relax. ...
Usually, if time permits, evenings in Cologne and Bonn are also good.
However, if I choose, I won't go this way, because I am very anxious and tired.
Ruedesheim, Bingen, Bart Munster, Elf and other places, I still have time to visit.
There are actually many possibilities. The key is to see how you want to play.
Pure hands, welcome to ask questions.