World's Most Extreme

A look at the most dangerous and extreme roads in the world, including a Russian highway decimated by mud each year, and an avalanche prone Chinese-Tibetan road.

Reviews the world's 10 most extreme bridges, ones that demonstrate extreme engineering and stand in some unforgettable locations.

From India to Japan, Peru and the Philippines, railways mean magnificent engineering in extreme environments.

A look at the craziest airports connecting all the corners of the world, from the South Pole to Hong Kong. Plus, how the daring pilots navigate the risky airports to land their planes safely.