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It boasts the largest single span of vaulted roof anywhere — 2,000 tons of glorious fan vaulting — and the most complete collection of original 16th-century Renaissance stained glass in existence.

When it was built, it had the largest single span of vaulted roof anywhere — 2,000 tons of incredible fan vaulting, held in place by the force of gravity.

The interior has breezy fan vaulting and is lit with enough stained glass to earn it the nickname “Lantern of the West.”

Inside the building, intricate fan vaulting is flaking off, damaged by seeping rainwater and leaking pipes.

If we look at one of the soaring pilasters and follow up its lines, we shall see that each of the flutings is prolonged in a rib of the fan vaulting.