"Part of a Roman Aqueduct. Aqueducts form one of the most characteristic features of Roman architecture. Although these simple successions of gigantic arches, which stretch for miles, have no pretensions to artistic beauty, yet their wonderful size and extent bear witness to the vast conceptions of Roman genius."

Roman Aqueduct

"Part of a Roman Aqueduct. Aqueducts form one of the most characteristic features of Roman architecture.…

A curved or vaulted structure.

Arch

A curved or vaulted structure.

Arch of Titus (Rome)

Arch of Titus

Arch of Titus (Rome)

Elipse arch.

Arch

Elipse arch.

Equilateral arch.

Arch

Equilateral arch.

Horseshoe arch.

Arch

Horseshoe arch.

Lancet arch.

Arch

Lancet arch.

Segment arch.

Arch

Segment arch.

Segmental arch.

Arch

Segmental arch.

Semicircle arch.

Arch

Semicircle arch.

"Arches of S. Apollinare Nuovo, Ravenna." — Encyclopediia Britannica, 1910

Arches

"Arches of S. Apollinare Nuovo, Ravenna." — Encyclopediia Britannica, 1910

"Arches of S. Apol linare Nuovo, Ravenna." — The Encyclopedia Britannica, 1910

Arches

"Arches of S. Apol linare Nuovo, Ravenna." — The Encyclopedia Britannica, 1910

An illustration of two story tall arches.

Arches

An illustration of two story tall arches.

"Romanesque arches." —D'Anvers, 1895

Romanesque arches

"Romanesque arches." —D'Anvers, 1895

A barrel vault, also known as a tunnel vault or a wagon vault, is an architectural element formed by the extrusion of a single curve (or pair of curves, in the case of a pointed barrel vault) along a given distance. The curves are typically circular in shape, lending a semi-cylindrical appearance to the total design. The barrel vault is the simplest form of a vault: effectively a series of arches placed side by side, i.e., one after another.

Barrel Vault

A barrel vault, also known as a tunnel vault or a wagon vault, is an architectural element formed by…

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end of the 14th century. This bridge, which still exists, has seven pointed brick arches, each 70 feet in span and 64 feet in height; the depth of the arch ring at the crown is 5 feet, 6 inches." — Encyclopedia Britanica, 1893

Ticino Bridge

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end…

The construction of arches and vaults did not remain confined to the interior of buildings, but imparted its own expression to the architecture of the exterior also; for the shape of openings became circular instead of square, although they were surrounded by half-columns gave a rectilinear finish to the whole.

Architecture of the Colosseum

The construction of arches and vaults did not remain confined to the interior of buildings, but imparted…

"The crown of the Stuart sovereigns, the first kings of Great Britain, James I and Charles I, had four arches, each of the eight semi-arches springing from the alternating crosses and fleurs-de-lys of the circlet." — Encyclopedia Britannica, 1893

Crown

"The crown of the Stuart sovereigns, the first kings of Great Britain, James I and Charles I, had four…

"Cusp, in architecture, is the point formed by the meeting of two small arches, or foils, in foil arches, or tracery. Cusps often terminate in rich bosses of flowers and leaves." — Chambers' Encyclopedia, 1875

Cusp

"Cusp, in architecture, is the point formed by the meeting of two small arches, or foils, in foil arches,…

"Fragment of the Entrance-Façade of the Palace of Diocletian at Spalatro. The tendency of the period of decadence is particularly illustrated by the introduction of small shafts resting on brackets, which serve no other purpose than to adorn and enliven the façade. Between these small shafts are alternate windows, with a semicircular head and niches of various shapes.

Entrance Façade of Diocletian's Palace

"Fragment of the Entrance-Façade of the Palace of Diocletian at Spalatro. The tendency of the…

A mechanical drawing exercise of drawing a curved line with circle in the middle. The image is drawn by drawing a small circle in the middle. The curved lines around the circle is drawn by using the ticked line as the radius.

Curved Line with Circle Mechanical Drawing Exercise

A mechanical drawing exercise of drawing a curved line with circle in the middle. The image is drawn…

The Pont du Gard is an aqueduct and bridge that was built over the Gard River by the Roman Empire. It is located in Southern France, in the Vers-Pont-du-Gard and Remoulins area. The bridge is built on three levels. The lower level has 6 arches and carries a road, the middle level has 11 arches, and the upper level has 35 arches and was used as a water conduit.

Pont du Gard

The Pont du Gard is an aqueduct and bridge that was built over the Gard River by the Roman Empire. It…

A groin vault or groined vault (also sometimes known as a double barrel vault or cross vault) is produced by the intersection at right angles of two barrel vaults. The word groin refers to the edge between the intersecting vaults; cf. ribbed vault. Sometimes the arches of groin vaults are pointed instead of round.

Groin Vault

A groin vault or groined vault (also sometimes known as a double barrel vault or cross vault) is produced…

An arch having an angular curve made by the intersection of two semi-cylinders of arches.

Groined-arch

An arch having an angular curve made by the intersection of two semi-cylinders of arches.

"Saxon Architecture was the style of architecture in use in England from the time of its conversion till the Conquest. It is easily recognized by its massive columns and semicircular arches, which usually spring from capitals without the intervention of the entablature."—(Charles Leonard-Stuart, 1911)

Tower in Northamptonshire, England

"Saxon Architecture was the style of architecture in use in England from the time of its conversion…