There's a fascinating story over on Wired about a brilliant young man's criminal career. His career ended eventually, but he did some audacious stuff.
The plane slowed and leveled out about a mile aboveground. Up ahead, the Viennese castle glowed like a fairy tale palace. When the pilot gave the thumbs-up, Gerald Blanchard looked down, checked his parachute straps, and jumped into the darkness. He plummeted for a second, then pulled his cord, slowing to a nice descent toward the tiled roof. It was early June 1998, and the evening wind was warm. If it kept cooperating, Blanchard would touch down directly above the room that held the Koechert Diamond Pearl [Sisi Star]. He steered his parachute toward his target.
Within minutes, the Sisi Star was in Blanchard’s pocket and he was rappelling down a back wall to the garden, taking the rope with him as he slipped from the grounds. When the star was dramatically unveiled to the public the next day, Blanchard returned to watch visitors gasp at the sheer beauty of a cheap replica. And when his parachute was later found in a trash bin, no one connected it to the star, because no one yet knew it was missing. It was two weeks before anyone realized that the jewelry had disappeared.