Best for nightlife: Berlin, Germany

Some say you are more likely to get into Berghain, Berlin’s most famous nightclub, if you arrive alone. Whether or not that’s the case, the rumour typifies the German capital’s penchant for solo travellers, who are drawn by its deserved reputation as one of the friendliest, most inclusive cities in Europe.

Of course Berlin is currently the place to party, offering a collection of colossal clubs and graffiti-bespattered beer gardens, but the city’s attractions aren’t reserved for the hedonistic holidaymaker. The sense of history surrounds you, from the Brandenburg Gate to the Holocaust Memorial, while quirky cafes, cool boutiques, weekend flea markets and a growing food cart scene offer more leisurely delights; visit alone or as part of a walking tour.