We are considering travelling by train from Spain to Vienna. We live in Andalucia and know that we can travel Madrid to Paris on the overnight train but that is not really in the right direction. We can also go Barcelona to Zurich which is better. Most of the information I can find on various websites is rail travel within a country or more about rail passes - which we don't want. We would also consider flying part of the way if that were easier.
Any advice gratefully received.