1. The heating systems of these villas relied on the Roman hypocaust . 2. The tunnels were identified as the hypocaust of a bathhouse. 3. A few have large, private baths heated by a hypocaust system. 4. The building was constructed by volunteers and includes a functioning hypocaust system. 5. It features a well-preserved Roman bath suite with hypocaust underfloor heating. 6. The main room is heated by an underfloor system similar to a Roman hypocaust . 7. The church's very unusual heating system was based on the Roman Hypocaust . 8. The second room from the west contains an example of a Hypocaust heated floor. 9. The Aula Palatina was equipped with a floor and wall heating system ( hypocaust ). 10. The remains of the hypocaust were found during the reconstruction of the property in 1864.