Similar Structures
In German-speaking countries in the Holy Roman Empire, many castles had double curtain walls with a narrow ward between them, referred to as a Zwinger. These were added at vulnerable points like the gate, but were rarely as fully developed as in the concentric castles in Wales or the Crusader castles.
The principle of an outer and inner wall was also used in fortified cities, such as the Theodosian Walls of Constantinople and the city wall of Carcassonne.
The concept of mutually reinforcing lines of defence with flanking fire was continued in later periods, such as the early modern fortifications of Vauban, where outer defence works were protected and overlooked by others and their capture did not destroy the integrity of the inner citadel.
Read more about this topic: Concentric Castle
Famous quotes containing the words similar and/or structures:
“In the middle of the next century, when the literary establishment will reflect the multicultural makeup of this country and not be dominated by assimiliationists with similar tastes, from similar backgrounds, and of similar pretensions, Langston Hughes will be to the twentieth century what Walt Whitman was to the nineteenth.”
—Ishmael Reed (b. 1938)
“The philosopher believes that the value of his philosophy lies in its totality, in its structure: posterity discovers it in the stones with which he built and with which other structures are subsequently built that are frequently better—and so, in the fact that that structure can be demolished and yet still possess value as material.”
—Friedrich Nietzsche (1844–1900)