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,
Cathedral of Évora as well as decorative arcaded corbels. The lantern-tower over the crossing is very picturesque. It has a row of windows that bathe the transept area with light. Its spire, as well as spire of the tower above the crossing of the transept, is surrounded by six turrets, and each turret is a miniature copy of the tower itself. The design of the tower resembles that of the cathedral of Zamora and the "Torre del Gallo" of the Old cathedral of Salamanca. The ogival main portal is a masterpiece of Portuguese Gothic sculpture. The marble columns are occupied by huge statues