This type of round pillar — found on homes and other structures — has decorative details that reflect ancient Greek architectural styles. When placed on the outside of buildings, the columns are often made of stone and plaster and designed to prop up overhangs, eaves, and the like. When used indoors, Greek columns are often purely decorative.
The columns can have smooth or fluted sides and typically feature a decorative flourish at the base and top. The designs are divided into three categories, based on traditional Greek designs. The Corinthian, shown in the large photo, is the most floral and ornate. Doric (below, left) is the most basic, while the Ionic (below, right) falls somewhere in between, with scroll-like flourishes.