Inca kitchens in ancient times were designed to be functional and practical, and some of them featured built-in wine racks. These kitchens were typically small and had a central hearth for cooking. The built-in wine racks were often made of stone or clay and were used to store and display wine. Wine was considered a luxury in Inca culture, and having a built-in wine rack in the kitchen was a way to showcase the family's wealth and social status.