Glinting with glass, steel and concrete skyscrapers, Frankfurt-on-the-Main (pronounced ‘mine’) is unlike any other German city. The focal point of a conurbation of 5.5 million inhabitants, ‘Mainhattan’ is a high-powered finance and business hub, home to one of the world’s largest stock exchanges as well as the gleaming new headquarters of the European Central Bank. Frankfurt famously hosts some of the world's most important trade fairs, attracting thousands of business travellers. Its airport, the region’s biggest employer, is the third-largest in Europe, hand ling over 57 million passengers per year. ​ Yet at its heart, Frankfurt is an unexpectedly traditional and charming city, with half-timbered buildings huddled in its quaint medieval Altstadt (old city), cosy apple wine taverns serving hearty regional food, village-like neighbourhoods filled with outdoor cafes, bo...