Construction was first limited to the apodyterium (dressing room), frigidarium (cold room), tepidarium (warm room), laconicum and calidarium (hot room); the "natatio" was added later as three rooms, including a nymphaeum with a water cascade, providing an alternative route to the existing one of the "tepidarium" followed by the "calidarium". The entrance to the bathhouse is through a long corridor that leads into the "apodyterium". The bathers would also have had access to a latrine, seating between six and eight people.