Coastal defence and fortificationCoastal defence (or defense) and coastal fortification are measures taken to provide protection against military attack at or near a coastline (or other shoreline), for example, fortifications and coastal artillery. Because an invading enemy normally requires a port or harbour to sustain operations, such defences are usually concentrated around such facilities, or places where such facilities could be constructed.
De Redin towersThe De Redin Towers (Torrijiet ta' De Redin) are a series of small coastal watchtowers built in Malta by the Order of Saint John between 1658 and 1659. Thirteen towers were built around the coast of mainland Malta, eight of which still survive. The Mġarr ix-Xini Tower, which was built on Gozo in 1661 after the death of de Redin, has a design similar to the De Redin towers. The Spanish knight Martin de Redin was elected Grand Master of the Order of St. John on 17 August 1657.
Great Wall of ChinaThe Great Wall of China (, literally "ten thousand li long wall") is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups from the Eurasian Steppe. Several walls were built from as early as the 7th century BC, with selective stretches later joined by Qin Shi Huang (220–206 BC), the first emperor of China. Little of the Qin wall remains. Later on, many successive dynasties built and maintained multiple stretches of border walls.
Rammed earthRammed earth is a technique for constructing foundations, floors, and walls using compacted natural raw materials such as earth, chalk, lime, or gravel. It is an ancient method that has been revived recently as a sustainable building method. Under its French name of pisé it is also a material for sculptures, usually small and made in molds. It has been especially used in Central Asia and Tibetan art, and sometimes in China.
Martello towerMartello towers, sometimes known simply as Martellos, are small defensive forts that were built across the British Empire during the 19th century, from the time of the French Revolutionary Wars onwards. Most were coastal forts. They stand up to high (with two floors) and typically had a garrison of one officer and 15–25 men. Their round structure and thick walls of solid masonry made them resistant to cannon fire, while their height made them an ideal platform for a single heavy artillery piece, mounted on the flat roof and able to traverse, and hence fire, over a complete 360° circle.
Lascaris towersThe Lascaris Towers (Torrijiet ta' Lascaris) are a series of mostly small coastal watchtowers built in Malta by the Order of Saint John between 1637 and 1652. The first seven towers were built around the coast of mainland Malta between 1637 and 1638. Between 1647 and 1652, a large tower was also built on mainland Malta, and two smaller ones were built on Gozo. The Italian knight Giovanni Paolo Lascaris was elected Grand Master of the Order of St. John on 16 June 1636.
Wignacourt towersThe Wignacourt towers (Torrijiet ta' Wignacourt) are a series of large coastal watchtowers built in Malta by the Order of Saint John between 1610 and 1620. A total of six towers of this type were constructed, four of which survive. In 1418, the Maltese people made a petition to build a tower guarding the Gozo Channel, but nothing materialised. In the early 15th century, the local Mahras maintained several watch posts around the islands' coastline, and some of the posts possibly had a coastal watchtower.
Knights HospitallerThe Order of Knights of the Hospital of Saint John of Jerusalem (Ordo Fratrum Hospitalis Sancti Ioannis Hierosolymitani), commonly known as the Knights Hospitaller (ˈhɒspᵻtələr), was a medieval and early modern Catholic military order. It was founded in the Kingdom of Jerusalem in the 12th century and had headquarters there until 1291, thereafter being based in Kolossi Castle in Cyprus (1302–1310), the island of Rhodes (1310–1522), Malta (1530–1798), and Saint Petersburg (1799–1801).
FortificationA fortification 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"). From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest. Some settlements in the Indus Valley Civilization were the first small cities to be fortified.
DunhuangDunhuang () is a county-level city in Northwestern Gansu Province, Western China. According to the 2010 Chinese census, the city has a population of 186,027, though 2019 estimates put the city's population at about 191,800. Sachu (Dunhuang) was a major stop on the ancient Silk Road and is best known for the nearby Mogao Caves. Dunhuang is situated in an oasis containing Crescent Lake and Mingsha Shan (, meaning "Singing-Sand Mountain"), named after the sound of the wind whipping off the dunes, the singing sand phenomenon.
