[1] It has an illusion, which makes it appear inside out, or normally, depending on which way the viewer sees it.

It is located at the National Gallery of Art Sculpture Garden.

Among his last works, it was a part of the House series (Lichtenstein).

[5] The house uses optical illusion to play with perspective.

To appreciate the full effect, walk at a steady rate along the arc of the sidewalk that runs in front of and nearly perpendicular to the sculpture, with your head turned to one side, facing the sculpture.