Considering the Spanish Steps Via in Arcione in Rome?
A VT member wrote the following comment about visiting Rome:
Terme di Diocleziano by sandysmith
The Baths of Diocletian were the biggest in Rome and had the same scheme as the Baths of Trajan and Baths of Caracalla; they could accommodate 3000 people at once. They were built in 298-306 by emperor Diocletian