Definition
An echinus is a convex molding, usually part of a column's capital, located beneath the abacus. 🏛️ It's a prominent feature in classical architecture, particularly in Doric and Ionic orders. Think of it as a rounded cushion supporting the top of the column. Unlike a plain capital, an echinus adds decorative detail. The echinus is an essential element of classical design. Often seen in Greek and Roman buildings.