The Roman Thermae of Maximinus, are the archaeological ruins of a monumental building and public baths, whose construction was integrated into the urban renewal of the civitas of Bracara Augusta, the Roman provincial capital of Gallaecia. The large public/civic construction consisted of a building, housing the baths, and a theatre, although the archaeological excavations continue.

The plan of the building, located on one of the higher hilltops in the municipality of Braga, has not still be completely uncovered.

The complex is of a reasonably large dimension, constructed in the second half of the 1st century, which functioned until the 5th century. Its initial layout included two hot areas and, likely, two areas for autonomous services. These spaces were considerably restricted during the Dicoletian remodelling between the 3rd and 4th centuries.

Following the entrance to the thermae, is the apodyterium (dressing spaces), with natatio (cold pools), before entering the palaestra (gymnasium) or frigidarium (cold baths) followed by tepidarium (warm baths) and caldarium (hot chambers), which were heated by the hypocaust (underground structures formed by arches or pillars, which allowed the circulation of hot air) from the praefurnium (furnace).

The site has not yet been total excavated, resulting in a number of archaeological and temporal questions.