Rectangular shapes are very common (as in castra and quadrangular castles).

The current buildings include the ruined earthwork and buried remains of the quadrangular castle.

Quadrangular castle - a building of the Middle Ages is located directly near the mosque.

Quadrangular castles typically display a sophisticated and complex approach to the planning of internal social spaces.

A quadrangular castle, Bodiam is roughly square-shaped.

Another approach to castle design that removed the need for a keep was the quadrangular castle design that emerged in France during the 13th century.

Quadrangular castle (Mardakan)

To the north is the site of Sigston Castle, a fourteenth century quadrangular castle, surrounded by a now largely dry moat.

Bodiam Castle has been described by military historian Cathcart King as the most complete surviving example of a quadrangular castle.

Quadrangular castle (Mardakan) is a quadrangular castle in Baku, Azerbaijan.

There are many quadrangular castles around Britain, for example: Bodiam Castle in East Sussex, and Bolton Castle.

Wressle Castle is a Grade I listed quadrangular castle located in Wressle, East Riding of Yorkshire, England.

Sheriff Hutton Castle is a quadrangular castle in the village of Sheriff Hutton, North Yorkshire, England.

The earliest extant building on the site is the ruin of a quadrangular castle, probably begun in 1327 by Geoffrey Scrope, which was reputedly demolished in the Civil War.

Among other architectural treasures are Quadrangular Castle in Mardakan, Parigala in Yukhary Chardaglar, a number of bridges spanning the Aras River, and several mausoleums.

New castles at Raby, Bolton and Warkworth Castle took the quadrangular castle styles of the south and combined them with exceptionally large tower keeps to form a distinctive, northern style.

Lumley Castle is a 14th-century quadrangular castle at Chester-le-Street in the North of England, near to the city of Durham and a property of the Earl of Scarbrough.

The castle was built between 1378 and 1399 by Richard le Scrope, 1st Baron Scrope of Bolton and Chancellor of England, and is an example of a quadrangular castle.

A quadrangular castle or courtyard castle is a type of castle characterised by ranges of buildings which are integral with the curtain walls, enclosing a central ward or quadrangle, and typically with angle towers.

The Bastille's design was highly innovative: it rejected both the 13th-century tradition of more weakly fortified quadrangular castles, and the contemporary fashion set at Vincennes, where tall towers were positioned around a lower wall, overlooked by an even taller keep in the centre.

By contrast, Farleigh Hungerford drew on the tradition of quadrangular castles that had begun in France during the early 13th century, in which the traditional buildings of an unfortified manor were enclosed by a four-sided outer wall and protected with corner towers.

This tower was repaired and expanded in the 17th century to form a courtyard castle.

Built for the Regent Albany, Doune Castle is a magnificent late 14th century courtyard castle.

He also invested his wealth in Crichton Castle, adding to it and transforming it into an impressive courtyard castle.

A quadrangular castle or courtyard castle is a type of castle characterised by ranges of buildings which are integral with the curtain walls, enclosing a central ward or quadrangle, and typically with angle towers.

At the start of the 14th century, a keep was built on the site as part of a wider programme of work by the St Loe family, creating a rectangular, courtyard castle with four corner towers, protected by a ditch on three sides.

It is associated with Buittle Castle, a courtyard castle dating to about 1230, which was destroyed early in the 14th century and belonged to Devorgilla and her husband John I de Balliol (founder of Balliol College, at Oxford University).