In ancient Rome, kitchens were an integral part of the household, and many of them featured built-in indoor herb drying racks. These kitchens were equipped with various cooking utensils and tools, and the drying racks were typically made of metal or wood. The Romans valued the use of herbs in their cuisine, and drying them allowed for long-term preservation. The herbs would be carefully arranged on the racks and left to dry in a warm and well-ventilated area of the kitchen.