What term refers to the large public baths of ancient Rome, noted for domes and groin vaults?

• A. Thermae
• B. Balnea
• C. Caldarium
• D. Frigidarium

Answer: (A)

Thermae refers to the large public baths of ancient Rome. These vast complexes were built for bathing, socializing, and exercise, and their architecture often showcased grand vaulted spaces with domes and groin vaults that allowed wide, open interiors. Inside a thermae you'd find specific rooms like the caldarium (hot bath) and the frigidarium (cold bath), but those are individual parts of the complex rather than the whole. Balnea denotes baths more generally and can imply smaller or private facilities, not the famous expansive Roman public baths.