The Eros Centre projects in Liège and Seraing reflect complex rationales: protecting sex workers whilst rendering them invisible, allowing prostitution to exist whilst controlling it, or even ghettoising it. Their relevance remains a matter of debate.

Following the closure of numerous brothels and hostess bars in Liège in 2008, around a hundred sex workers had no choice but to retreat into the anonymity of private homes or into hiding, thereby rendering prostitution invisible. Others moved to the outskirts of the city, destabilising and overcrowding existing prostitution zones, particularly in Seraing, which saw the number of sex workers in its area triple, thereby hindering prevention and social support initiatives by grassroots organisations.