The age of consent is the same regardless of the gender or sexual orientation of a person and whether the sexual activity is between people of the same or different gender.
It is an offence for anyone to have any sexual activity with a person under the age of 16.
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).
In eight European countries (The Netherlands, Germany, Austria, Switzerland, Greece, Turkey, Hungary, and Latvia), prostitution is legal and regulated.