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In this documentary Istanbul is unveiled and the real Istanbul is shown by way of the back door, the philosophy behind the culture is revealed.

This spectacular aerial journey reveals Poland as we've never seen it before. Flying cameras swoop over the largest castle in the world, zoom through fireworks over Krakow, and witness the struggles of European Bison, the largest land animal in Europe. This bird's eye view of Poland also reveals a nation undergoing an astonishing transformation – in Warsaw Poles are hard at work building what will become the tallest building in the EU.

This spectacular aerial journey reveals Spain, as we've never seen it before. Flying cameras soar over the Sagrada Familia as architects work around the clock to finish the building. Daredevil barnacle hunters rappel down jagged cliffs to hunt for one of the world's most exclusive shellfish and we glide over one of the world's greatest abandoned buildings nestled deep in Spain's northern mountains.

This spectacular aerial journey reveals The United Kingdom, as we've never seen it before. Flying camera's soar over the Giant's Causeway as jet-ski litter pickers tidy up the coast. Daredevil gardeners handle chainsaws while hanging from the Eden Project roof and we glide through the London skyline as one of the city's tallest skyscrapers gets a spring clean.

A spectacular aerial journey across Germany, revealing a factory the size of a city, a fairy-tale castle and the largest land vehicle on Earth.

Welcome to the curious, surprising and always outspoken world of straight men who go Gay4Pay. Curiously, there is a disproportionate percentage of men working in gay porn who identify as straight. Why would a straight man do gay porn? What motivates him to try this or make a career of it? Why is there such keen interest and debate into the sexuality and personal lives of these men? And what does it say about us, the viewer that so much of gay porn is dominated by images of straight men?

A spectacular aerial journey across Italy reveals dredging boats in Venice, the ladder top fishermen of Sicily and a winter school for supercars.

This spectacular aerial journey across the Netherlands, reveals ancient windmills, futuristic greenhouses and the world's biggest bonfire.

A primetime special with performances from the superstar including Adele’s first new material in six years plus her chart-topping hits. The special will also feature an exclusive interview with Adele by Oprah Winfrey from her rose garden, in Adele’s first televised wide-ranging conversation.