Turns out the biggest construction site in Europe has got some moves. And all it takes to turn 42 cranes into a nimble-bodied dance troupe is some light choreography, a techno beat, and a fair amount of neon lighting.  The dance, or the Krenasee event as it is officially known, took place in Austria last month at the site of a planned 20,000-square-foot suburb called Urban Lakeside Vienna. FilmSpektakel caught the action in all of its glory and put together this impressive time-lapse video. [Via Gizmodo.]