From the birth of the column, they have been used on the interior
of building just as much as they were used on the exterior.
Although most ancient architectural columns located on the
interior of buildings did provide structural strength for the
building, many interior architectural columns are commonly
used for decoration purposes only.
Decorative interior columns are becoming more popular with
small business and home owners, often requiring a half a column
and capital to place up against a wall as a pilaster column.
This effect produces a look as if a column was assisting the
wall in structural support.