1. Roman baths could be rather large. In 235 AD, the luxurious Caracalla baths in Rome spanned 27 acres and soared to 130 feet. The complex included a library, an Olympic sized pool, and an ...

The biggest city in Roman Britain was Londinium (London). Aquae Sulis (Bath) was a town famous for its baths. Image caption, Some Roman homes were kept warm with an underfloor heating system ...