Trying to see Europe in just two weeks is always a challenge, but it becomes much more manageable when you design the route to move in one steady direction instead of jumping around. The goal is to keep the flow logical so you spend more time enjoying places and less time sitting in trains or airports.

A smart 14-day route could look something like this. Start in Amsterdam or Rotterdam in the Netherlands. These cities are well connected by air and make a calm beginning. Spend your first two or three days here getting used to the European pace, enjoying the canals and relaxed atmosphere.
From there take a train to Berlin. This leg is straightforward and comfortable. Berlin feels completely different from Amsterdam, bigger energy, different history, and plenty to explore. Give it at least two full days.
Next move south to Prague. The train ride is scenic and not too long. Prague is compact and beautiful, perfect for walking. Many people say it feels like a fairy tale but the real charm comes from wandering the streets early in the morning or late in the evening when there are fewer crowds.
After Prague continue to Vienna. This is another easy and pleasant train connection. Vienna offers a more elegant and classical European feel with beautiful architecture and good food. One or two days here is usually enough before moving on.
From Vienna the next logical stop is Budapest. The journey is short and the contrast between the two cities is interesting. Budapest has a livelier, slightly more chaotic energy compared to Vienna. Spend a couple of days enjoying the thermal baths, the river and the city views.
If time allows and you still have a few days left, you can finish the trip by heading to Krakow in Poland instead of flying out from Budapest. This keeps the route moving generally eastward without backtracking. From Krakow you can fly home from there or take a train back if needed, but ideally choose a flight out from one of the last cities.
This route - Amsterdam or Netherlands to Berlin to Prague to Vienna to Budapest (and optionally Krakow) - moves roughly northwest to southeast and then a bit east. It avoids the common mistake of going to Paris then suddenly to Rome then back north. Each move follows a natural path and most legs can be done by train during the day.
The key to making this work in 14 days is keeping the pace realistic. Try not to change location every single day. Aim for 2 to 3 nights in each main stop. This gives you time to actually experience the city instead of just dropping your bag and running to the next train station.
Also plan your arrival and departure flights carefully. Flying into Amsterdam and out of Budapest or Krakow creates a nice one way route without needing to return to the starting point. This single direction approach saves a surprising amount of time and reduces travel fatigue.
Of course you can adjust the exact cities depending on your interests. Some people prefer replacing Berlin with Cologne or adding a short stop in Munich. The important part is keeping the overall flow from north or west towards south or east without sharp turns back.
When done right, two weeks in Europe this way leaves you with clear memories from several completely different places without feeling like you spent half the time on trains.
