Architect Louis Sullivan was the man who coined the term “form follows function.”

Architect Louis Sullivan was the man who coined the term “form follows function.”

Functionalism was the most important thing to Bauhaus furniture designers, which led to some groundbreaking designs.

Functionalism was the most important thing to Bauhaus furniture designers, which led to some groundbreaking designs.

Tubular steel chairs, designed by Marcel Breuer, 1928

Tubular steel chairs, designed by Marcel Breuer, 1928

The table lamp, designed by Wilhelm Wagenfeld in 1924

The table lamp, designed by Wilhelm Wagenfeld in 1924

Bauhaus Building by Walter Gropius (1925–26)

Bauhaus Building by Walter Gropius (1925–26)