Ancient Rome

This article from Oxford Research Encyclopedia has a discussion of the architecture of the baths (using the Latin term Thermae):

Yegül, Fikret. "baths and bathing." Oxford Classical Dictionary.  July 30, 2020. Oxford University Press. Date of access 14 Jan. 2025, <https://oxfordre.com/classics/view/10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-1067>

And this is a short article about the architect of the baths, Apollodorus of Damascus:

Purcell, Nicholas. "Apollodorus (7), of Damascus, Greek architect for Trajan, 2nd cent. CE." Oxford Classical Dictionary.  December 22, 2015. Oxford University Press. Date of access 14 Jan. 2025, <https://oxfordre.com/classics/view/10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-599>

Here is a link to the Roman Tourism board's English language website for the baths:

Trajan's Baths, Dipartimento Grandi Eventi, Sport, Turismo e Moda di Roma Capitale https://www.turismoroma.it/en/places/trajans-baths