Ancient Roman architecture of being in their houses, as they instead would go to public baths, and engage in other communal activities. Many lighthouses were built around the Mediterranean and the coasts of the empire, including the Tower of Hercules at A Coruña in northern Spain, a structure which survives to this day. A smaller lighthouse at Dover, England also exists as a ruin about half the height of the original. The light would have been provided by a fire at the top of the structure. All Roman cities had at least one thermae, a popular facility for public bathing, exercising and socializing.
Sauna fire is not a problem. The most common modern sauna types are those with electric stoves. The stones are heated up and kept on temperature using electric heating elements. There is thermostat and a timer (eight hour maximum continuous heating time) on the stove. This type of heating is generally used only in urban saunas. Many cultures have sweat baths, though some have more spiritual uses while others are purely secular. In Ancient Rome there was the "thermae" or "balneae" (from Greek βαλανεῖον "balaneîon"), traits of which survive in the Turkish or Arab "hammam". In the Americas there is the