Roman baths, used for both socializing and cleaning, were a marvel of engineering. The water was heated by the fire lit under the pool and the hot air was circulated between the walls of the bath; so that both the water temperature and the temperature of the building would remain constant. The water used in the Roman baths was generally carried from the water source to the bath with the help of aqueducts.
The dirty water coming out of the baths had a function. These dirty waters were drained from the canal and used to clean the dirty canals of the latrinas (Public Toilet) next to the baths.
For the Romans, these baths were an important part of daily life. They would go every day and stay for a few hours. The wealthy Romans used to come with their slaves. The slaves brought in usually took on the task of carrying towels and drinks. Before bathing in Roman baths, sports exercises were done. Running, weight lifting and wrestling are examples of these. After the exercises, the servants would smear their masters with oil and then scrape off the oil with the help of a board or bone. In this way, great dirt would be removed.
In the Roman bath, body cleaning was done with an apparatus called strigilis. With this apparatus, sweat, sand and dust sticking to the body were removed, and then the body was lubricated in the area called aleipterion.
Roman baths were also present inside various palaces or castles. The Romans used the same name (Thermae) for them as well. The design of the baths is mentioned a lot on Vitruvius’ De architectura.
Since the limits of socialization were exceeded in some baths and there were incidents such as prostitution, it was decided that women would enter the bath from morning to noon and men would enter the bath in the afternoon. So they were prevented from entering to baths together.
For example, Emperor Trajan forbade men and women to bathe together in the Ephesus Bath in 98 AD.