The Rio-Antirio bridge is a cable-stayed bridge near Patra on the Peloponnese, linking the towns of Rio and Antirrio on the western mainland Greece, thus connecting with the rest of Europe. The bridge dramatically improves access to and from the Peloponnese, which could previously be reached only by ferry or via the isthmus of Corinth at its extreme east end. It has a length of 2252 m (2882 m including the access bridges); as it consists entirely of five cable-stayed spans and four pylons, and it is one of the world's longest cable-stayed suspended decks. Its width is 28 meters -- it has two vehicle lanes per direction, an emergency lane and a pedestrian walkway.

Africa s might and grandeur is formidable. Here, two powerful empires co-exist, one of land and one of the water realm. For most of the year these two entities work peaceably side by side, but in the dry season the rules change. The dry season is predator prime-time. The shore of the Luangwa River, Zambia, is the boundary between kingdoms and during this time, the battle begins. It s risky business for a lion to go up against a crocodile. But here, it s the ultimate conflict. Some of nature s most powerful jaws lock in confrontation as the world s fiercest predators battle for supremacy.

It is the world’s tallest bridge, at 343 m tall at its highest pillar, the Millau Viaduct in Southern France is almost a third taller than any other bridge in the world. A freeway in the sky, the bridge crosses the river Tarn in France and can save travelers almost an hour of travel between France and the Mediterranean. It also removes the traffic congestion once faced in the town of Millau. The episode documents the difficulties that the crew had to faced, and the challenging processes that were used in its construction. The documentary contains a few words from the mayor of Millau, Jacques Godfrain, the bridge architect, Norman Foster, and designer, Michel Virlogeux.

Take a behind-the-scenes tour and gain insight into BMW's high-tech and innovative manufacturing plants as they create the sleek and stylish Z4 Roadster.

Go inside fire trucks mammoth 800,000 sq.ft. operation, where over 1,500 highly skilled workers mix muscle and high-tech tools to create made-to-order rigs in approximately 45 days.

The 300-bed Tulane University Hospital in New Orleans, Louisiana takes in patients from other hospitals during Hurricane Katrina. Relatives of the patients and others also arrive until there are over 2,000 people at the hospital. The hospital is being powered by emergency generators in the basement and has no running water. When the basement starts to flood after the hurricane, the decision is made to evacuate. The patients, staff and everyone else are airlifted from the hospital's car park roof by helicopter.

Uncover the secrets behind the magnificent Parthenon, in an inside look at its $10 billion restoration. It was first used as a temple to Athena.

In a city where 75 percent of the people don't have a car, the New York subway offers the best transit system in America. Follow the emergency management response team as they plot rescues, escapes and re-routing on the system, in order to ensure the safety of both the riders and workers of the subway. The threats range from breakdowns to flooding to terrorism.

Salvage experts uncover notorious Black Sam’s loot, revealing many of the secrets of the real-life Pirates of the Caribbean. Sword-wielding sea bandits, a tragic fate and a sunken treasure. Follow the swashbuckling story of the world’s first excavation of a pirate treasure ship.

One animal embodies all that is amazing about survival. It has adapted to wildly varying habitats and evolved unique weapons of survival; its greatest asset is its ferocious bite and it is evolutions ultimate survivor, but what species is it?

Megalodon. It was the biggest predator to ever swim the oceans of the world. For 20 million years, this ferocious 50-ton shark with a 7-foot jaw and seven inch teeth terrorized the creatures of the seas from Australia to South America and the coasts of North America. Not even the giant whales of the time were safe from this apex predator. Now, nearly 2 million years after Megalodon disappeared from earth, scientists will rebuild this monster shark.

The Heilongjiang Acrobatic troupe, based in the city of Harbin, is one of China's most respected acrobatic groups. For over fifty years its performers have thrilled audiences throughout China with contemporary interpretations of this traditional art form. Two years ago, artistic director Mr. Guan Xin Min decided on a new and innovative direction for Heilongjiang, they would become the only acrobatics truope in China to perform on ice. Combining ice scaking and traditional acrobatics may be a great marketing tool, but it will take a team of ultra talented and dedicated performers to turn this idea into a reality. After training practices and performances, the Heilongjiang Acrobatic troupe is ready to take its unique style of ice acrobaics beyond mainland China. this is a tense and exciting time for all the yound performers, but will circustnaces beyond their control conspire to end this momentous endeavour before it even begins?

For the first time ever, we take an exclusive peek into the mysterious lives of the most secretive animals of the African Bushveld. We will expose the behaviors of these animals seldom, if ever, seen before as we delve into the shadowy existence of animals rarely seen, let alone captured on television. We will investigate seven enigmatic creatures - the serval, aardvark, pangolin, genet, African wildcat, civet and porcupine - as they furtively go about their top-secret activities. Each story will introduce us to one of these animals, and give us a privileged glimpse into their extremely private lives and their particular adaptations for life in the dangerous wilderness, where they battle against tremendous odds. We witness how each one cunningly outwits the super-predators in its own special way, with extra-sharp senses and other strategies for survival.

Mysterious in its movements, ferocious and feared, the Tiger Shark is a highly-adaptable hunter, swallowing up anything in its way. Sharks are suffering from human environmental pressures, so do these secretive monsters still deserve their killer reputation? Can these prehistoric predators fight to find their way in the 21st century? This show looks at conservation and research efforts in South Africa, Hawaii, and tiny Bimini Island to allow humans and sharks to coexist in the 21st century.