In October of 2018, authorities had ordered the renovation of the Vanburgh Bridge or famously known as the Grand Bridge, which is a major part of the Blenheim Palace Estate in Oxfordshire, England.
The Blenheim Palace is considered to be the finest view in England. But when the renovation started, workers discovered something that was never known about the palace for hundreds of years.
After investing £12 million to improve the condition of the bridge, what the experts discovered left them speechless and they were taken aback that such a huge secret was hidden from the public for so long.