Usually, male and female organs are viewed in private but at the Louvre museum, they are on public display everywhere! I must admit though the cocks for public viewing are very sadly in a soft, flaccid state and not in a state of raging erection but technically I am correct to say they are rock hard since they are of marble.
Centuries ago, sex was conducted very discreetly unless you go way back 2,000 years to the Roman empire when sex orgies were part of life! So statues of naked men and women were the only official, permissible way for ordinary citizens to be aroused, amused and titillated!