Likely, every now and then, you are thinking about driving through Old Continent by car, or train. Plenty of another countries you will crossing by, getting to know the habits, heritage. You will be able to take as many stops as you wish, and stay in particular cities even for entire day. There is even an option to get one ticket for every European Railways, expired after two weeks. This is really tempting method, and not as unreasonable as you can think it is. You might get a train ticket in Wroclaw and, within couple days, wake up in Madrid, for instance. So stop hesitate, get your bags and head to the next railway stop!