Windows are very important in every interior. Old factory windows have an industrial and modern design. The usual black colour against a white interior make them jump out and attract the eye even more than a normal window. These traditional windows are often found in old churches and factories. Though that they have single glazing, they can be isolated with a special type of glass, making them excellent for residences.
Sources: 1 - Paulina Arcklin 2 - Abduzeedo 3 - The Ultra Linx 4 - Homedsgn 5 - Plaza Magazine