4. Mont Blanc, French/Italian Border
The Mont Blanc may not seem so intimidating as it stands at only 4,810 metres, yet it has claimed over 8000 lives. This is due to its popularity and it is climbed by an average of 20,000 tourists every year. France and Italy have fought for centuries over ownership of this mountain and currently share the rights although the majority of it is in France. The first woman to reach the top of Mont Blanc was Marie Paradis in 1808.