an opening framed by columns or pilasters supporting an entablature and pediment, often used decoratively

a pavilion-like decorative structure imitating a temple front and often used to frame a sculpture or picture

shrine framed by two columns supporting an entablature and pediment.

In Roman religion, an aedicula (pl. aediculae) is a small shrine. The word aedicula is the diminutive of the Latin aedis or aedes, a temple or house; thus, an aedicula is literally a small house or temple.