Spire spires were an astounding architectural innovation, beginning with the early fourteenth-century spire at Freiburg Minster, in which the pierced stonework was held together by iron cramps. The openwork spire, according to Robert Bork, represents a "radical but logical extension of the Gothic tendency towards skeletal structure." The organic skeleton of Antoni Gaudi's phenomenal spires at the Sagrada Família in Barcelona represent an outgrowth of this Gothic tendency. Designed and begun by Gaudi in 1884, they were not completed until the 20th century. In England, "spire" immediately brings to mind Salisbury Cathedral. Its 403-foot (123-m) spire, built between 1320 and 1380,
Spire no bounds. With advances in technology, steel production, and building techniques the spire enjoyed an unprecedented surge through architecture, Cologne Cathedral's famous spires, designed centuries earlier, were finally completed in this era. Spires have never really fallen out of fashion. In the twentieth century reinforced concrete offered new possibilities for openwork spires. Spire A spire is a tapering conical or pyramidal structure on the top of a building, often a skyscraper or a church tower, similar to a steep tented roof. Etymologically, the word is derived from the Old English word "spir", meaning a sprout, shoot, or stalk of grass.