Historians have long wondered why the Black Death took hold when it did and how it spread so rapidly. The bubonic plague tore across Europe from 1347 to 1351, killing an estimated 25 million people.

For years, cancer was the plague of the modern era. It was one disease that scientists and doctors were rushing to find a cure for while patients lost.

The 'birthplace' of Mary Poppins, this place is full of surprises. It's unusual to be greeted by a stranger at the entrance to a public toilet. It's even stranger to then be led inside by them. But I ...