Column, supporting construction element with round, polygonal or put a tread cross-section. Originally the column carries a frame, since Roman time also for walls about curves and also is also appropriated ornamentally without weight-bearing function. She can stay empty or come out only partially as a wall column or pillar. Main parts are a base, shaft and capital. Compelling inevitably is only the shaft. He can become rejuvenated upwards or down, have an Entasis or be thick constant.