Copenhagen became the capital in the 15th century, and today has about 1,2 millions inhabitants, more than 20 per cent of the entire population of Denmark. Visitors tend to spend most of their time in the pretty historical city center, which is packed with fine historical buildings ranging from colourful half-timbered houses to fairy-tale like royal castles. But these days Copenhagen is largely evolving in the outer districts, which in Danish are called brokvarter. The old red light district behind the main train station, Vesterbro, has transformed into a hipster paradise with cool restaurants and bars. The once rough immigrant district of Nørrebro is now popular with indy designers and coffee shops - besides the many kebab places. Even the island with the airport, Amager, is experiencing a renaissance with new developing, some of it world class architecture like 8tallet. So to fully experience Copenhagen make sure to explore all the different districts: Christianshavn (water canals), Ørestad (new architecture), Bryggen (urban waterfront), Frederiksberg (elegant houses), Vesterbro (hipster central), Nørrebro (multicultural mix), Østerbro (posh living) and, of course, Christiania - the freetown.