Blue Vault, St Giles’, Edinburgh

The vaulted ceiling of St Giles’ Cathedral, on the Royal Mile in the heart of Edinburgh.

Despite its name, St Giles’ is not technically a cathedral. A cathedral is defined as the seat of a bishop, and since the Scottish Reformation in the 16th century, the Church of Scotland has not maintained bishops in the traditional sense. St Giles’ is therefore a parish church, though its scale, history, and national importance have long earned it the title “High Kirk of Edinburgh.”

Founded in the 12th century and closely associated with the Protestant reformer John Knox, the church played a central role in Scotland’s religious transformation. Its richly restored interior—especially the vivid blue vaulted ceiling with gold detailing—draws the eye upward, combining medieval structure with later decorative ambition.