We aim to provide empirical data regarding the role of various sex-on-
premises venues for gay men in the spread of HIV infection and homosex
ual activity with casual partners at different (public) venues was ass
essed. A questionnaire was filled out by participants in a cohort stud
y in Amsterdam, The Netherlands. Questions were asked regarding sex in
private homes, baths, cruising areas, darkrooms, cinemas, and hotel r
ooms. The majority of the 410 men who had sex with casual partners had
done so in private homes (67.8%). However, cruising areas, baths and
darkrooms were also highly frequented. Three general 'scenes' of venue
s frequented could be distinguished, and characteristics of men freque
nting different types of venues were found to differ. Men who reported
unprotected anal sex did so for only one type of venue. Private homes
were the locations where most men engaged in high-risk behaviours. Ho
wever, the number of partners practising unprotected anogenital sex wa
s highest in (semi) public venues.