The Cathedral of the Holy Cross and Saint Eulalia (Catalan: Catedral de la Santa Creu i Santa Eulàlia, Spanish: Catedral de la Santa Cruz y Santa Eulalia), also known as Barcelona Cathedral, is the Gothic cathedral and seat of the Archbishop of Barcelona, Spain. The cathedral was constructed from the 13th to 15th centuries, with the principal work done in the 14th century. The cloister, which encloses the Well of the Geese (Font de les Oques) was completed in 1448. In the late 19th century, the neo-Gothic façade was constructed over the nondescript exterior that was common to Catalan churches. The roof is notable for its gargoyles, featuring a wide range of animals, both domestic and mythical.
It is a hall church, vaulted over five aisles, the outer two divided into chapels. The transept is truncated. The east end is a chevet of nine radiating chapels connected by an ambulatory. The high altar is raised, allowing a clear view into the crypt.
The cathedral is dedicated to Eulalia of Barcelona, co-patron saint of Barcelona, a young virgin who, according to Catholic tradition, suffered martyrdom during Roman times in the city. One story says that she was exposed naked in the public square and a miraculous snowfall in mid-spring covered her nudity. The enraged Romans put her into a barrel with knives stuck into it and rolled it down a street (according to tradition, the one now called Baixada de Santa Eulàlia). The body of Saint Eulalia is entombed in the cathedral's crypt.
Vault (French voûte, from Italian volta) is an architectural term for an arched form used to provide a space with a ceiling or roof. The parts of a vault exert lateral thrust that requires a counter resistance. When vaults are built underground, the ground gives all the resistance required. However, when the vault is built above ground, various replacements are employed to supply the needed resistance. An example is the thicker walls used in the case of barrel or continuous vaults. Buttresses are used to supply resistance when intersecting vaults are employed.
The simplest kind of vault is the barrel vault (also called a wagon or tunnel vault) which is generally semicircular in shape. The barrel vault is a continuous arch, the length being greater than its diameter. As in building an arch, a temporary support is needed while rings of voussoirs are constructed and the rings placed in position. Until the topmost voussoir, the keystone, is positioned, the vault is not self-supporting. Where timber is easily obtained, this temporary support is provided by centering consisting of a framed truss with a semicircular or segmental head, which supports the voussoirs until the ring of the whole arch is completed. With a barrel vault, the centering can then be shifted on to support the next rings.