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This specific type of fortification was named after the first discovered example: Trelleborg near Slagelse, excavated in the years 1936-1941.Historically, the name trelleborg has been translated and explained as ″a fortress built by slaves″, since the Old Norse word for slave was thrall (The modern word is træl in Danish and träl in Swedish) and borg means fortress or city.
List of the strongholds or dar al-hijra of the Order of Assassins in Persia (Iran) and Syria. Most of the Persian Ismaili castles were in the Alborz mountains, in the regions of Daylaman (particularly, in Alamut and Rudbar; north of modern-day Qazvin ) and Quhistan (south of Khurasan ), as well as in Qumis .
A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latin fortis ("strong") and facere ("to make"). [1] Castillo San Felipe del Morro, Puerto Rico.
The castle was built over seven years, from 1525 to 1532, by Norway's last Roman Catholic Archbishop, Olav Engelbrektsson. [1] Steinvikholm castle became a powerful fortification by the time it was built, and it is the largest construction raised in the Norwegian middle ages. [2] [3]
Inside the bailey were stables, workshops, and a chapel. The motte was the final refuge in this type of castle. It was a raised earth mound, and varied considerably, with these mounds being 3 metres to 30 metres in height (10 feet to 100 feet), and from 30 to 90 metres (98 to 295 ft) in diameter. [3] There was a tower on top of the motte.
The Acra (also spelled Akra, from Ancient Greek: Ἄκρα, Hebrew: חקרא ,חקרה Ḥaqra(h)), with the meaning of "stronghold" (see under "Etymology"), was a place in Jerusalem thought to have had a fortified compound built by Antiochus Epiphanes, ruler of the Seleucid Empire, following his sack of the city in 168 BCE.
Alamut, which is the most famous of these strongholds, was thought impregnable to any military attack and was fabled for its heavenly gardens, library, and laboratories where philosophers, scientists, and theologians could debate in intellectual freedom. [2] The stronghold survived adversaries including the Seljuq and Khwarezmian empires.
A hillfort is a type of fortified refuge or defended settlement located to exploit a rise in elevation for defensive advantage. They are typical of the late European Bronze Age and Iron Age.