360° Explore Hagia Sophia, Istanbul's incredible Roman church - BBC

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Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home Explore the Hagia Sophia. Built by the Romans 1,500 years ago, it was the biggest church in the world.

No expense was spared: coloured marble from around the Roman Empire and nearly 10,000 square meters of gold mosaic. In 1453, the Hagia Sophia was turned into a mosque after Ottoman Turks conquered the city.

Now a museum, it has survived earthquakes, sieges and the rise and fall of empires.

Yet Hagia Sophia still stands, the ancient jewel in the crown of Istanbul.

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