Multifoil arch

A Multifoil arch is a style of arch that was an architectural element in the Moorish architecture of al-Andalus.

The multifoil arch design was influenced by Islamic art and architecture. Examples are found in the maqsuras and arcades of the Moorish Umayyad Caliphate's mosques, which are located in present-day Spain.

The term is French, "foil" means "leaf." The number of foils involved is indicated by a prefix: trefoil —3, quatrefoil —4, etc., and multifoil —many.