Such changes took place over several centuries. Later, the fireplace moved to one of the walls, and only the next step in its development was the merging of the furnace and chimney with the wall. Already by the 12th century, fireplaces met modern requirements: they had a direct chimney, adjoined to a wall, partially or fully embedded in a wall or built in the corner of a hall.
In the Middle Ages, fireplaces were made of hewn stone and were of large size, so that the knights in them could completely fry the bull. During the Renaissance, they first became the subject of serious interest of artists. Portals were made of granite and marble, decorated with Florentine mosaics. Their composition included columns, pilasters.
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