A man has left internet viewers in awe after sharing a photo of his grandmother, Jewell Paulson, on her 102nd birthday—and people can't believe how youthful she looks.

In this extract from the documentary Persians: A History of Iran, we look at the Ziggurat of Chogha Zanbil - a man-made mountain palace created 3,000 years ago by the Elamites in Iran. Watch the ...