The Antonian Bath, which dates from the 3rd century, was known as the Licinian Baths (after emperor Publius Licinius Egnatius Gallienus) and has several storeys.
Louis Poinssot's identification of the bath as dating to Gallienus’ reign on the basis of incomplete inscriptions and Dougga's prosperity at this time has been called into question by recent research, conducted in particular by Michel Christol.
Christol has suggested that the bath dates from the reign of Caracalla; this thesis has since been confirmed by an analysis of inscriptions.
Others have even suggested that the bath dates from the reign of the Severan dynasty, because of a particularity which became common a century later in the west: the columns in the northwest peristyle feature daises bearing arches.

The bath was later used for the production of olive oil at an unknown date.

The symmetrical building is medium-sized, with an area of 1,700 m² (18,000 sq ft) excluding the palaestra, of which 175 m² (1,880 sq ft) are taken up by the frigidarium.
The construction of the bath required work both to lower and to raise sections of the slope on which it stood, which may explain why parts of the building have been better preserved than others; the section built on raised ground has for the most part been lost.
The Antonian Bath, which dates from the 3rd century, was known as the Licinian Baths (after emperor Publius Licinius Egnatius Gallienus) and has several storeys. Louis Poinssot's identification of the bath as dating to Gallienus’ reign on the basis of incomplete inscriptions and Dougga's prosperity at this time has been called into question by recent research, conducted in particular by Michel Christol. Christol has suggested that the bath dates from the reign of Caracalla; this thesis has since been confirmed by an analysis of inscriptions. Others have even suggested that the bath dates from the reign of the Severan dynasty, because of a particularity which became common a century later in the west: the columns in the northwest peristyle feature daises bearing arches.
The bath was later used for the production of olive oil at an unknown date.
The symmetrical building is medium-sized, with an area of 1,700 m² (18,000 sq ft) excluding the palaestra, of which 175 m² (1,880 sq ft) are taken up by the frigidarium. The construction of the bath required work both to lower and to raise sections of the slope on which it stood, which may explain why parts of the building have been better preserved than others; the section built on raised ground has for the most part been lost.
Dougga