It's everyone's favourite mathematical symbol, a genuine mathematical constant and the number the fits as the ratio of a circle's circumference to its diameter.

The history of the railway is fascinating, stretching from ancient Greece to modern Japan, with many twists and turns along the way.

Europe’s oldest city, the famous acropolis of Athens dates back to the 5th century BC, with its construction overseen by the ancient statesman, Pericles.

The Pelion Railway, on which rides the fabled Little Train of Pelion, is a narrow gauge railway line in Greece, originally operated by Thessaly Railways.