Repairs to a 12th Century stained glass window and stonework are under way at Canterbury Cathedral in the first phase of work funded by a £50m appeal.
Repairs to the Corona are a large part of the conservation project
Part of the cathedral's South Oculus window has been removed to assess the extent of damage to the glass and lead, prior to repairs being carried out.
New stones are being put in place in the South East Transept and the Corona, which is surrounded by scaffolding.
The fundraising total has now risen to more than £6.5m.
As well as conservation work, modernisation is taking place at the choristers' boarding house.
On the exterior of the South East Transept, leaking roofs have been repaired and mortar is being replaced.
The work on the eastern Corona is likely to take at least two years, with turrets being rebuilt and stonework in the columns being renewed.
Future fund-raising efforts include the British 10k London Run and a 1,200-mile cycle ride along an ancient pilgrimage route from Canterbury to Rome.