The remains of five Archbishops of Canterbury have been found beneath a medieval parish church next to Lambeth Palace, the Archbishop of Canterbury's official London residence, according to BBC.
Builders renovating the Garden Museum, housed at the deconsecrated church of St Mary-at-Lambeth, found a hidden crypt containing 30 lead coffins.
Site manager Karl Patten said: "We discovered numerous coffins - and one of them had a gold crown on top of it".
The remains date back to the 1660s.
Mr Patten, from the building contractors Rooff, said his team were exposing the ground, lifting the flagstones in the church, when they uncovered an entry to what looked like a tomb.
They used a mobile phone camera on the end of a stick to search the void.