In ancient Egypt, kitchens were essential spaces where food was prepared for the pharaohs and their households. Some of these kitchens featured built-in indoor living walls adorned with lush greenery. These living walls not only added aesthetic appeal to the kitchen but also had practical benefits. The plants helped to purify the air by absorbing toxins and releasing oxygen, creating a fresher and more pleasant cooking environment. The Egyptians were known for their advanced agricultural practices, and incorporating an indoor living wall in the kitchen was a testament to their understanding of the benefits of plants.