Larissa Station Athens - Take the Levadia Express!
If you go to Delphi from Athens, don't go by bus. Take the train. Train? Yes. There's a train. Nowadays that's not so surprising, but you don't expect this kind of transport to be possible in Greece. But this is the 70s. Can't beat it.
But what's this? A cross between the Paignton-Babbacombe express and the Blaenau-Festiniog railway....unreal. A bunch of tiny carriages and an old engine but it was a train!! Cool. Off to the most spectacular place in Greece on a train.