The Hanna House is a house designed for Paul and Jean Hanna at Stanford by Frank Lloyd Wright.  It was made in 1936, but it had a very modern feel.  
It's often called the "honeycomb house" because the house was designed to be hexagonal rather than square.  The floor tiles are all hexagons; the house as a whole is a hexagon; the rooms, the furniture, and everything else is hexagonal.