The hypocaust is an underfloor heating system that was used throughout the Roman Empire in villas of the rich. He is said to have become wealthy himself by buying villas at a low price, including spas and his newly invented …
The hypocaust is an underfloor heating system that was used throughout the Roman Empire in villas of the rich. He is said to have become wealthy himself by buying villas at a low price, including spas and his newly invented …