This Building Is Invisible to Radar, and Blinding to Everyone Else

Coop Himmelb(l)au design an energy-producing tower that treads lightly on planet Earth, and invisibly on radar screens.

Like most of the work from Austrian firm Coop Himmelb(l)au, this proposed 30-story Town Town tower in Vienna is jagged and imposing. But where LA's High School #9 and the Akron Art Museum are meant to stand out like a Judas Priest costume circa 1982, this tower's built for stealth. In fact, the faceted metal skin is invisible to radar.

The building, which is meant to anchor...