The degree of enforcement of the anti-prostitution laws varies by country, by region, and by city. In many places, there is a big discrepancy between the laws which exist on the books and what happens in practice. Depending on the country, various prostitution-related activities may be prohibited where a specific law forbids such activity , decriminalized where there is no specific law either forbidding or allowing and regulating the activity , or regulated where a specific law explicitly allows and regulates the activity if certain conditions are met.
Activities which are subject to the prostitution laws include: selling and buying sexual services, soliciting in public places, running brothels, deriving financial gain from the prostitution of another, offering premises to be used for prostitution etc.
Often, the prostitution laws are not clear-cut, and are subject to interpretation, leading to many legal loopholes. While the policy regarding adult prostitution differs by country, child prostitution is illegal throughout Europe. Similarly, human trafficking , forced prostitution, and other abusive activities are also prohibited.
The legal and social treatment of prostitution differs widely by country. Very permissive prostitution policies exist in the Netherlands and Germany, and these countries are major destinations for international sex tourism.
Amsterdam 's prostitution windows are famous all over the world. In Sweden, Norway, Iceland, Northern Ireland, France, and the Republic of Ireland, it is illegal to pay for sex, but not to be a prostitute the client commits a crime, but not the prostitute.
