: A Guide To The History, Pla... — Gothic Cathedrals

Emphasized vertical lines and "fan vaults," as seen in the Henry VII Chapel at Westminster Abbey. The Architectural "Trinity" of Features

Known for flame-like, undulating stone tracery, seen at Rouen Cathedral . Gothic cathedrals : a guide to the history, pla...

Intersecting stone ribs supported the ceiling's weight, which meant the panels between them could be thinner and the overall roof much lighter. Emphasized vertical lines and "fan vaults," as seen