Apodyterium at Bilbilis, abandoned second century CE.
In ancient Rome, the apodyterium (from Ancient Greek: ἀποδυτήριον, place where to undress) was the primary entry in the public baths, composed of a large changing room with cubicles or shelves where citizens could store clothing and other belongings while bathing. Privately owned slaves, or one hired at the baths, called a capsarius, would look after belongings while citizens enjoyed the pleasures of the baths. A contemporary Roman schoolbook quotes a wealthy young Roman schoolboy who entered the baths, leaving his slave behind in the apodyterium: "Do not fall asleep, on account of the thieves." (ne addormias propter fures, CGL 3.651.10)