Column

A column in architecture is a vertical element that transmits the weight of the structure above to the structure below. Columns can be either a single piece or several pieces put together. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest.
History
Stone columns were already used in the architecture of ancient Egypt as early as 2600 BC.
Column Media
Columns of the Parliament House in Helsinki, Finland
Column of the Gordon Monument in Waterloo.
Dragon pillar from the Yingzao Fashi, Song dynasty
Plan, front view and side view of a typical Persepolis column, of Persia (Iran)
Minoan columns at the West Bastion of the Palace of Knossos
Illustration of the end of a Mycenaean column, from the Tomb of Agamemnon
Illustration of the Tuscan order
Illustration of the Doric order