The Lupanar of Pompeii is the most famous brothel in the ruined Roman city of Pompeii. It is of particular interest for the erotic paintings on its walls. Lupanar is Latin for "brothel". The Pompeii lupanar is also known as Lupanare Grande.
The Lupanar (VII, 12, 18–20) is located approximately two blocks east of the forum at the intersection of Vico del Lupanare and Vico del Balcone Pensile.
Early Pompeian excavators, guided by the strict modesty of the time period, quickly classified any building containing erotic paintings as brothels. Using this metric, Pompeii had 35 lupanares. Given a population of ten thousand in Pompeii during the first century CE, this leaves one brothel per 286 people or 71 adult males. Using a stricter standard for identifying brothels[clarification needed] brings the number to a more realistic figure including nine single room establishments and the Lupanar at VII, 12, 18–20. 
Brothels during this period were typically small with only a few rooms. The Lupanar was the largest of the brothels found in Pompeii with 10 rooms. Like other brothels, rooms in the Lupanar were plainly furnished. A mattress on a brick platform served as a bed. 
There have been 134 graffiti transcribed from the Lupanar at Pompeii. The presence of this graffiti served as one of the criteria for identifying the building as a brothel.
Examples of graffiti from the Lupanar include:
- Hic ego puellas multas futui ("Here I fucked many girls").
- Felix bene futuis ("Lucky guy, you fuck well," a prostitute's blandishment to her client, or "Lucky guy, you get a good fuck").
Other examples can be traced to other locations in Pompeii. Persons of wealth generally did not visit brothels because of the availability of mistresses or slave concubines. The graffiti do tell stories, however. Various authors respond to each other's carvings in a sort of dialogue.
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- Erotic art in Pompeii and Herculaneum
- Prostitution in ancient Rome
- Roman graffiti
- Sex in the Ancient World Pompeii History Channel Documentary
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