Just off Fleet Street the spire of St Bride's is best known for inspiring the tiered shape of wedding cakes. But the history of the church goes much deeper.
Canon Alison Joyce took me down into the crypt.
From cast iron coffins to deter body snatches to a Roman road, these corridors take you on a journey into the past.
The bones are neatly stacked and metres deep.
And they're not the only remains on display.
With the help of the experts from the museum of London these skeletons are helping unearth even more remarkable stories hidden under London.