This paper studies the effects of legal street prostitution zones on registered and perceived crime. We exploit a unique setting in the Netherlands where these tippelzones were opened in nine cities under different regulation systems. Our difference-in-difference analysis of 25 Dutch cities between 1994–2011 shows that opening a tippelzone decreases registered sexual abuse and rape by about 30–40 percent in the first two years. For cities which enforced licensing in tippelzones, we also find reductions in drug-related crime and long-term effects on sexual assaults. Effects on perceived drug nuisance depend on the regulation system and the proximity of respondents to the tippelzone. (JEL J16, J47, K42)