
One of the world’s largest and best persevered thermal spa complexes in ancient Rome, were entirely built by Marcus Aurelius Antoninus, known as the emperor Caracalla. This huge bathing complex, just walking distance from the Circus Maximus were begun in 212 under Septimius Severus (Lucius Severus, r. 193 to 211) inaugurated in 216 CE under Caracalla, and finally completed in 235 under Alexander Severus.