The Crusades were a series of religiously-sanctioned military campaigns waged by much of Latin Christian Europe, particularly the Franks of France and the Holy Roman Empire. The specific crusades to restore Christian control of the Holy Lan...

The Siege of Antioch took place during the First Crusade in 1097 and 1098. The first siege, by the crusaders against the Muslim-held city, lasted from 21 October 1097 to 2 June 1098. Antioch lay on the crusaders' route to Palestine, and ant...

In the early 11th century, the Egyptian Fatimid Caliph Al-Hakim bi-Amr Allah ordered the destruction of all churches and synagogues in Jerusalem. Reports of this were one cause of the First Crusade, which marched off from Europe to the area...

The Kingdom of Jerusalem was a Christian kingdom established in the Levant in 1099 after the First Crusade. It lasted less than two hundred years, until 1291 when the last remaining outpost, Acre, was destroyed by the Mamluks. At first the...

The Knights Hospitaller (also known as the Sovereign Military Hospitaller Order of St. John of Jerusalem of Rhodes and of Malta, Order of St. John, Knights of Malta, and Chevaliers of Malta; French: Ordre des Hospitaliers) is a Christian or...

Genghis Khan was the founder and Great Khan (emperor) of the Mongol Empire, which became the largest contiguous empire in history after his demise. He came to power by uniting many of the nomadic tribes of northeast Asia. After founding...

Leonardo Pisano Bigollo or simply Fibonacci, was an Italian mathematician, considered by some "the most talented western mathematician of the Middle Ages." Fibonacci is best known to the modern world for the spreading of the Hindu-Arabic nu...

The Siege of Jerusalem took place from September 20 to October 2, 1187. It resulted in the recapture of Jerusalem by Saladin and the near total collapse of the crusader Kingdom of Jerusalem. This provoked the Third Crusade by providing it w...

The Order of the Teutonic Knights of St. Mary's Hospital in Jerusalem, is a German Roman Catholic religious order. It was formed to aid Catholics on their pilgrimages to the Holy Land and to establish hospitals to care for the sick and inju...

The Siege of Constantinople (1204) destroyed parts of the capital of the Byzantine Empire as it was captured by Crusaders. After the capture the Latin Empire was founded and Baldwin of Flanders was crowned Emperor Baldwin I of Constantinopl...

The Mongol Empire was the largest contiguous empire in world history and for some time was the most feared in Eurasia. It was the product of Mongol unification and Mongol invasions, which began with Temujin being proclaimed ruler in 1206, e...

Magna Carta (Latin for "Great Charter", literally "Great Paper"), also called Magna Carta Libertatum, was an English charter originally issued in 1215. Magna Carta is the most significant early influence on the long historical process that...

Parzival is a major medieval German epic poem attributed to the poet Wolfram von Eschenbach, written in the Middle High German language. The poem is commonly dated circa the first quarter of the 13th century. The poem is, in part, an adapta...

The Codex Gigas is the largest extant medieval manuscript in the world. It was created in the early 13th century in the Benedictine monastery of Podlažice in Bohemia, and is now preserved at the National Library of Sweden in Stockholm. It i...

The Siege of Baghdad, which lasted from January 29 until February 10, 1258, entailed the investment, capture, and sacking of Baghdad, the capital of the Abbasid Caliphate, by Ilkhanate Mongol forces and allied troops. The Mongols were under...