Baths of Diocletian
Take the 30-minute Leonardo Express from the airport into Rome to visit the Baths of Diocletian, the biggest thermal complex built in Rome. They are a step away across the swirling traffic of Piazza dei Cinquecento. Opened in 306AD, they were a latter-day entertainment complex, with mosaic- and fresco-clad libraries, gymnasiums, swimming pools, concert halls, and thermal baths of several temperatures and could accommodate 3,000 punters. Two ornate Renaissance churches were later superimposed upon the site – including Michelangelo’s last work, Santa Maria degli Angeli e dei Martiri (1563), whose lovely cloister remains – which also has two small museums containing ancient artifacts.