Ornament (architecture) in the context of "Ovolo"

A portal is an opening in a wall of a building, gate or fortification, especially a grand entrance to an important structure.

Doors, metal gates, or portcullis in the opening can be used to control entry or exit. The surface surrounding the opening may be made of simple building materials or decorated with ornamentation. The elements of a portal can include the voussoir, tympanum, an ornamented mullion or trumeau between doors, and columns with carvings of saints in the westwork of a church.

Egg-and-dart, also known as egg-and-tongue, egg-and-anchor, or egg-and-star, is an ornamental device adorning the fundamental quarter-round, convex ovolo profile of moulding, consisting of alternating details on the face of the ovolo—typically an egg-shaped object alternating with a V-shaped element (e.g., an arrow, anchor, or dart). The device is carved or otherwise fashioned into ovolos composed of wood, stone, plaster, or other materials.

Egg-and-dart enrichment of the ovolo molding of the Ionic capital was used by ancient Greek builders, so it is found in ancient Greek architecture (e.g., the Erechtheion at the Acropolis of Athens), was used later by the Romans and continues to adorn capitals of modern buildings built in Classical styles (e.g., the Ionic capitals of the Jefferson Memorial in Washington, D.C., or the ones of the Romanian Athenaeum from Bucharest). Its ovoid shape (the egg) and serrated leaf (the dart) are believed to represent the opium poppy and its leaves. The moulding design element continues in use in neoclassical architecture. As a mass-produced architectural motif at the turn of the 19th to the 20th century, it can, when seen alongside dentils (tooth-like blocks of wood in rows), be used to date a building to the Edwardian period, which began with the death of Queen Victoria in 1901.

Celtic knots (Irish: snaidhm Cheilteach, Welsh: cwlwm Celtaidd, Cornish: kolm Keltek, Scottish Gaelic: snaidhm Ceilteach) are a variety of knots and stylized graphical representations of knots used for decoration, used extensively in the Celtic and Northumbrian styles of Insular art. These knots are most known for their adaptation for use in the ornamentation of Christian monuments and manuscripts, such as the 8th-century St. Teilo Gospels, the Book of Kells and the Lindisfarne Gospels. Most are endless knots, and many are varieties of basket weave knots.

The fireplace mantel or mantelpiece, also known as a chimneypiece, originated in medieval times as a hood that projected over a fire grate to catch the smoke. The term has evolved to include the decorative framework around the fireplace, and can include elaborate designs extending to the ceiling. Mantelpiece is now the general term for the jambs, mantel shelf, and external accessories of a fireplace. For many centuries, the chimneypiece was the most ornamental and most artistic feature of a room, but as fireplaces have become smaller, and modern methods of heating have been introduced, its artistic as well as its practical significance has lessened.

Where the fireplace continues up the wall with an elaborate construction, as in historic grand buildings, this is known as an overmantel. Mirrors and paintings designed to be hung above a mantel shelf may be called "mantel mirror", "mantel painting" and so on.

In classical architecture, a taenia (Latin: taenia, from Ancient Greek ταινία (tainía) 'band, ribbon') is a small "fillet" molding near the top of the architrave in a Doric column. The entire structure above the columns is called the entablature. It is commonly divided into the architrave, directly above the columns; the frieze, a strip with no horizontal molding, which is ornamented in all but the Tuscan order; and the cornice, the projecting and protective member at the top.

The architrave, the lowest band, is split from bottom to top into the broad fascia, the guttae or "drips" (below the triglyph in the frieze), and the taenia (below the projecting cymatium).