Here are eight essential night train journeys. How many have you done? Moscow to St Petersburg The Red Arrow ... around Europe can send you a little whacko. Prague to Barcelona is best done ...

So without further adieu, here’s where to find Europe’s four most famous red light districts ... this type of night-life. Legalising prostitution in the specific area of the city known ...

Experts at MattressNextDay have identified Europe’s best 24-hour cities by analyzing the number of late-night events, dance clubs, party search volume and public transport availability.

Italy, Ireland, and the UK showed the greatest shift towards blue light emissions, while Belgium and Germany showed the least change. A color map of Europe at night ... such as red light waves.