Indulge in a culture-packed trip to the continent this festive season Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice A city break hits different in winter . Parks packed with sweat-drenched tourists are swapped for ethereal, fairy light-strewn streets; frosty cocktails