👉 In the context of architecture, a fenestellae is a type of window opening that is part of the design for a building. It is usually made from glass or other transparent material and has a decorative pattern on one side to create a sense of light and openness. Fenestellae are often used in buildings with large windows, as they provide a way to open up the space between the floors while also allowing natural light into the room. They can be found in many different styles of