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Double portcullis gates at Petersberg Citadel, Erfurt. Portcullises fortified the entrances to many medieval castles, securely closing them off during times of attack or siege. Every portcullis was mounted in vertical grooves in the walls of the castle and could be raised or lowered quickly by using chains or ropes attached to an internal winch ...
A postern is a secondary door or gate in a fortification such as a city wall or castle curtain wall. Posterns were often located in a concealed location which allowed the occupants to come and go inconspicuously. In the event of a siege, a postern could act as a sally port, allowing defenders to make a sortie on the besiegers. Placed in a less ...
Machicolations were more common in French castles than English, where they are usually restricted to the gateway, as in the 13th-century Conwy Castle. [4] Within France, machicolation is more common on southern castles. One of the oldest extant examples of machicolation in northern France is at Château de Farcheville which was built from 1290 ...
English: The portcullis design is recorded as the work of Charles Barry in 1834 and is used on many Royal commissions such as on the Great Bell ("Big Ben"). As well as wide use of the portcullis design with varied supporting emblems, this specific version with the crown has been used by HM Customs and Excise "for some centuries."
Two sections of the 16th-century curtain wall around Berwick-upon-Tweed, at the eastern end of the Anglo-Scottish border. The introduction of gunpowder made tall castle walls vulnerable to fire from heavy cannon , which prompted the trace italienne style from the 16th century.
Image:BlankMap-World-v4.png – Version of v2, but it increases the size of other tiny countries as well, for visibility purposes, and uses white borders even for the microstates. Image:BlankMap-World-v4-Borders.png – Version of v4 with borders around each country.
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A gatehouse is a type of fortified gateway, an entry control point building, enclosing or accompanying a gateway for a town, religious house, castle, manor house, or other fortification building of importance. Gatehouses are typically the most heavily armed section of a fortification, to compensate for being structurally the weakest and the ...