An architectural pier is a structural element used to support a building or bridge. It is typically composed of several components, including an ANTA, which is a type of column with a curved top; a DORIC column, which is a type of column with a plain, unadorned top; an IONIC column, which is a type of column with a scroll-like top; a PILASTER, which is a flat, rectangular column; and an OGEE, which is a type of arch with a pointed top. Together, these elements form the architectural pier, which provides support for a building or bridge.