Definitions

The Kingdom of Jerusalem was a state created in 1099 CE by Crusaders and western settlers after the First Crusade (1095-1102 CE). With Jerusalem as its capital, the kingdom was the most important of the four Crusader States in the Middle...

Derbent (sometimes "Derbend" or "Darbend") is an ancient city located along the Caspian Sea in what is present-day Russia. Although the area in and around Derbent has been continuously inhabited since at least the 8th century BCE, Shah Yazdegerd...

Hedeby (Old Norse: Heiðabýr; German: Haithabu) was an important stronghold in Viking Age Denmark from the 8th-11th centuries CE and, along with Birka in present-day Sweden, it was the most important Viking trading center in Europe. During...

The Knights Templar were established c. 1119 and given papal recognition in 1129. It was a Catholic medieval military order whose members combined martial prowess with a monastic life to defend Christian holy sites and pilgrims in the Middle...

The term Kabbalah refers specifically to the form of Jewish mysticism that became widespread in the Middle Ages. However, in recent decades it has essentially become a generic term for the entirety of Jewish mystical thought. Literally meaning...

Canyon de Chelly or Canyon de Chelly National Monument is a protected site that contains the remains of 5,000 years of Native American inhabitation. Canyon de Chelly is located in the northeastern portion of the US state of Arizona within...

Prambanan (Javanese: Rara Jonggrang) is a Hindu temple complex dating from the 9th century CE located near Bokoharjo, on the island of Java in Indonesia. Prambanan is the largest Hindu temple in Indonesia and one of the largest Hindu temples...

Edessa (modern Urfa), located today in south-east Turkey but once part of upper Mesopotamia on the frontier of the Syrian desert, was an important city throughout antiquity and the Middle Ages. A city within the Seleucid Empire, then capital...

Wupatki or Wupatki National Monument is an Ancestral Puebloan site that contains over 800 ancient ruins. It is situated in the north-central region of the US state of Arizona and is approximately 50 km (31 miles) northeast of the present-day...

The German Crusade of 1197 CE, also known as the 'Emperor's Crusade', was led by the Holy Roman Emperor Henry VI (r. 1191-1197 CE). Although the emperor died on his way east, his army did capture Beirut from the forces of the Ayyubid dynasty...