The British Museum

It's not every day you get to say 'I found a lost, presumed to be mythical, ancient Sumerian temple'. Unless you're curator of ancient Mesopotamia Sébastien Rey. Because he did exactly that - rediscovering the Temple of Ningirsu in Girsu, in Southern Iraq. And he did it by cracking an ancient Sumerian maths puzzle that had stumped archaeologists for over 140-years.

Join Matt Parker and find out how unit fractions and predictive archaeology are 'way better than the golden ratio'.