Mosteiro dos Jerónimos
Mosteiro dos Jerónimos, Belem, Lissabon, Portugal
João de Castilho, a Spanish architect and sculptor, continued the construction in 1517. He completed the retaining walls and the unique single-span ribbed vault, a combination of stellar vaulting and tracery vaults spanning the 19 m-wide church. Each set of ribs in the vaulting is secured by bosses. The bold design (1522) of the transversal vault of the transept lacks any piers or columns, while Boitac had originally planned three bays in the transept. The unsupported vault of the transept gives the viewer the impression as if it floats in the air.