BASE Jumping. Parachuting off a fixed object instead of a moving one. Daredevils jump from antennas, bridges, cliffs, high rises, and waterfalls.
Parkour. This performance art was based on military course training. Participants negotiate a setting using athletic skills, gymnastics, and no equipment.
Tightrope Walking. A balancing act of walking on a rope. Perhaps the most hand sweating one I have seen involved the Twin Towers.
Climbing Buildings. Alain Robert, known as the French Spiderman, is perhaps the most famous of these daredevils.
Subway. Enough adrenalin for the average citizen.
