The history of architect-designed chairs goes back as far as architecture itself—it wouldn’t have occurred to early practitioners to confine themselves to buildings. But it was in the 20th century, with the advent of Modernism, that the practice flourished. Until then, chairs were essentially carpenter’s pieces: hand-crafted, decorative, elaborate.
Design as a separate discipline didn’t yet exist, so the Modernist architects knew that if they wanted suitable furniture for their great works, they would have to create it; chairs became mini-manifestos of their ideas.
The house was a machine for chairs to live in.