Laconicum

Laconicum (i.e. Spartan, "sc." "balneum", bath), the dry sweating room of the Roman "thermae", contiguous to the "caldarium" or hot room. The name was given to it as being the only form of warm bath that the Spartans admitted. The "laconicum" was usually a circular room with niches in the axes of the diagonals and was covered by a conical roof with a circular opening at the top, according to Vitruvius (v.10), from which a brazen shield is suspended by chains, capable of being so lowered and raised as to regulate the temperature. The walls of the "laconicum" were plastered with marble stucco and polished, and the conical roof covered with plaster and painted blue with gold stars. Sometimes, as in the old baths at Pompeii, the "laconicum" was provided in an apse at one end of the "caldarium", but as a rule it was a separate room raised to a higher temperature and had no bath in it. In addition to the hypocaust under the floor, the wall was lined with flue tiles. The largest "laconicum", about 75 ft. in diameter, was that built by Agrippa in his "thermae" on the south side of the Pantheon, and is referred to by Cassius (liii.23), who states that, in addition to other works, he constructed the hot bath chamber which he called the "Laconicum Gymnasium". All traces of this building are lost; but in the additions made to the "thermae" of Agrippa by Septimius Severus another "laconicum" was built farther south, portions of which still exist in the so-called "Arco di Ciambella".

ee also

*Vindolanda