In the early 1900s the Cathedral, built about 950 years ago on marshy ground, was subsiding and in danger of collapse – desperate measures were needed to save it.
Enter William Walker, a deep sea diver, who, over six years, undertook one of the greatest, and most dangerous, civil engineering feats of all time.
The tour will take you inside and outside the Cathedral to see how Walker worked under water in deep pits to strengthen the foundations and save the building.
Practical information:
This tour takes between 60 and 90 minutes, including some time outside the Cathedral, so visitors should wear appropriate clothing and footwear. It may not be suitable for those with limited mobility.