Daredevil Cathedral Tightrope Walk
The video shows a professional slackliner named Christian Waldner attempting to walk a tightrope suspended high above the ground between two spires of St. Stephen's Cathedral in Vienna, Austria. The danger lies in the extremely high altitude and the potential for a fatal fall if he loses balance. While no safety equipment is visible, the professional nature of the event and the careful setup of the tightrope suggest that safety measures are in place. There are no other humans in immediate danger. The aftermath of the attempt is not shown, but the potential consequences of a fall from that height would be catastrophic, likely resulting in death or very serious injury.