Watch FilmoFlix. Exeter Cathedral in Devonshire, England, is considered to be the finest example of architecture of the Decorated period, 1250-1350. This film rolls back the centuries, unfolding the cathedral's history, showing the refinement of the sculpture that went into its building, from the airy vista of the nave--the longest unbroken stretch of Gothic vaulting in the world--to the vibrant colours of its windows. But more than architecture survives: Exeter is still a living church for the people of today.