But there is also the back way, the underground passage towards Vesterbro.
The streetwalkers in Copenhagen are mostly either Danish junkies or prostitutes from Africa and Eastern Europe.
The street hooker business is having more competition now days, so you can find very different kind of working girls from the Copenhagen streets.
According to the most recent figures of the Danish National Centre for Social Research, published in 2011, there are around 3,200 sex workers in Denmark, including around 600 street prostitutes, the majority of whom are foreign.
Every sixth man in Denmark has purchased sex and the more than 400 bordellos in the country turn over 1.2 billion kroner a year, according to statistics from Danmarks Statistik.
Selling and purchasing sex is legal in Denmark and a spokesman for the ruling Venstre party, said the government has no current plans to change the prostitution laws.
Like many other European cities, many sex workers in Copenhagen now use internet-based advertisements for in-call and out-call services.
Traditionally, Copenhagen’s street prostitutes have worked on Istedgade and the surrounding streets. Now the street sex workers are looking towards the city centre.
If you take a walk at night, you can see that the street whores as far as City Hall Square.
Prostitution was then fully decriminalized on 17 March 1999 when changes were made in the penal code (Straffeloven); in practical terms, prostitution had been tolerated for many years prior to the change in legal status.