The Gamma Project takes an eye-popping look at some of the greatest feats of engineering being built around the world today, modern-day miracles, focusing on the problems and solutions that surround the largest construction projects in human history.

THE WORLD'S BIGGEST TENT
The president of Kazakhstan has built a shining new capital at Astana in the heart of his country. Now he needs to entertain the hundreds of thousands of people moving here. But how do you build a massive entertainment centre full of natural light and fresh air in the middle of one of the world's most extreme climates, which swings from -40 Celsius in winter to +40 in summer? The answer is that you bring in some of the world's top architects and engineers to create an iconic structure unlike anything that has ever been built before.

THE WORLD'S MOST EXTREME RAILWAY
This is the story of the incredible engineering challenges that had to be overcome to build and maintain the highest railway line in the World, crossing hundreds of miles of Himalayan permafrost from China to Tibet. It's so high that the trains need pressurised carriages with an oxygen supply and the engineers must deal with melting permafrost, impossible working conditions and one of the world's most active earthquake zones.

THE WORLD'S GREATEST CONCERT HALL
Some of the World's greatest architects, engineers and acoustic experts have come together to build an iconic new landmark for a city enjoying an extraordinary rennaissance. Hamburg has been reborn as a major port at the meeting point of Western Europe and the post-Soviet East. Right in the heart of the bustle and noise of constant shipping and dockyards, the challenge is on to build the greatest concert hall on the planet inside an extraordinary structure designed by world famous architects Herzog and De Meuron.

THE PIXELLATED TOWER
Brilliant young architect Ole Sheeren's latest creation is a daring rethink of the modern skyscraper. Posing unprecedented engineering challenges, his design is inspired by "digital pixelation" creating an mind-blowing facade and some extraordinary living spaces. Fifty floors up apartments will have glass floors looking down on the city below, in others entire exterior walls fold away and the overall design seems as if the building has exploded into pixels with apartments skewed at wild angles.

Elbphilharmonie photo courtesy of Herzog and De Meuron.