After you've admired the Grand Canyon from the hiking trails (or even from the air on a helicopter tour), enjoy a new vantage point on a Colorado River rafting tour. Options range from the family ...

Temperatures here can drop 20 degrees Celsius below zero, which is extreme even for Hokkaido. 00:58 Hokkaido's largest river, the Ishikari River, flows through the gorge, which is full of towering ...

Discover the ultimate adrenaline rush in New Zealand, from bungee jumping to white-water rafting. Explore top extreme sports ...