These sculptures use a novel design, invented by the artist, which creates a slow back-and-forth movement in his art.

Can you even remember what sculptures used to rise from the plaza at the World Trade Center?

Reconstruction of the Philadelphion, where the sculpture used to stand (no return link)

Her small sculptures use curving, cylindrical and straight forms to elegant effect.

Her sculptures use materials such as glass, paper, metal and leather.

The new sculptures use, as Brancusi did, mostly ancient, traditional materials: wood, bronze and stone.

His sculpture in the lobby of Taipei 101, called 1-0 (2002, aluminum), uses multicolored numbers.

Good sculptures use a psychological yardstick rather than a physical one to measure scale.

Jehanne-Marie Gavarini's sculptures use industrial tubing and sheer fabrics to convey a sense of constrained sexuality.

But the most elaborately interactive works are by James Seawright, whose sculptures use motion detectors and light sensors to react to the human presence.