George Segal's Three People and Four Benches sits on the second floor of the Metropolitan Museum of Art. Surrounded by black tape it presents a challenge for security. Do people pay any attention to the almost invisible barrier? Some do, some don't. Those who don't are reminded by the security officer and if they get past security then the piercing sound from the motion detector lets them and everyone else know that they've breached the barrier. Much like Donald Judd's current sculpture at the Portland Art Museum, Segal's creation is veritable catnip!
And on a more surreal level, Max Ernst's portrait also mesmerizes.