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Henges sometimes, but by no means always, featured stone or timber circles, and circle henge is sometimes used to describe these structures. The three largest stone circles in Britain ( Avebury , the Great Circle at Stanton Drew stone circles , and the Ring of Brodgar ) are each within a henge.
The elevated entrance is the lowest and frequently the only way of entering a fortified building or residence. In the case of circular towers, a large opening in the main wall at ground level was a potential weakness and experts on castle design have argued that the elevated entrance served a structural as well as defensive purpose.
The plan is round, but it lacks "a genuine geometrical concept". [2] Gōr (old Firuzabad) 3rd century [dubious – discuss] The city plan was a perfect circle of 1,950 m diameter, divided into twenty sectors. The plan also featured a circular city center, with a tower at its very center. [4] Veh-Ardashir: 3rd century The circular wall is ...
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two semicircular ditches forming a circle and separated by causeways at opposing entrances. multiple circuits of ditches interrupted with entrances at cardinal or astronomically-oriented points and also having an internal single or double timber palisade. a single ring ditch. The structures are mostly interpreted as having served a cultic purpose.
Reconstructed crannog on Loch Tay, Scotland. A roundhouse is a type of house with a circular plan, usually with a conical roof. In the later part of the 20th century, modern designs of roundhouse eco-buildings were constructed with materials such as cob, cordwood or straw bale walls and reciprocal frame green roofs.
Traditional pā took a variety of designs, ranging from a simple terraced hill, to complex fortified structures that include multiple rows of palisades and underground defensive and ambush points. Māori pā differed from European hillforts in that they also prominently incorporate food storage pits and often, water sources.
Amiens Cathedral floorplan: massive piers support the west end towers; transepts are abbreviated; seven radiating chapels form the chevet reached from the ambulatory. In Western ecclesiastical architecture, a cathedral diagram is a floor plan showing the sections of walls and piers, giving an idea of the profiles of their columns and ribbing.