Architecture is both the process and the product of planning, designing, and constructing buildings and other physical structures.
Until 3D computer modeling became common, most architectural renderings were created by hand. There are still many architectural illustrators who create renderings entirely by hand. Some hand illustrators use a combination of hand and computer generated linework. Common mediums for hand architectural renderings include: Watercolor, Markers, Color Pencil, Pen and Ink, Acrylics