Holy grail: Did you mean...?

Pilgrimage in the Byzantine Empire involved the Christian faithful travelling often huge distances to visit such holy sites as Jerusalem or to see in person relics of holy figures and miraculous icons on show from Thessaloniki to Antioch...

Painted illustration of the quaternion eagle of the Holy Roman Empire, created by Jost de Negker in 1510 CE. It depicts the double-headed eagle crest of the Holy Roman Empire (adopted 1433 CE) with the banners of its towns. It became widely...

The Investiture Controversy, also referred to as the Investiture Contest or Investiture Dispute, was a conflict lasting from 1076 to 1122 between the papacy of the Catholic Church and the Salian Dynasty of German monarchs who ruled the Holy...

The Byzantine Church of the Holy Apostles, Athens. Built c. 1000, it is typical of the Byzantine church model copied everywhere across the Byzantine Empire.

A map illustrating the geography and history of Holy Island, also known as Lindisfarne. A tidal island off the northeast coast of England in Northumberland, it holds significant historical and religious importance due to its early Christian...

The Church of the Holy Sepulchre, Jerusalem. Completed in July 1149 when the city was the capital of the Kingdom of Jerusalem, the church replaced a smaller version on the site considered to be the place of Jesus Christ's crucifixion and...

Tomb of Holy Roman Emperor Frederick II (l. 1194-1250 CE) in Palermo, Sicily.

Gold coin of Holy Roman Emperor Frederick II, minted in Sicily between 1211-1250 CE. Weighs 5.2 grammes and measures 20 mm (British Museum, London)

Portrait of Charles V, Holy Roman Emperor (1500-1558), line engraving on paper by Barthel Berham. Scottish National Portrait Gallery, Edinburgh.

Woodcut portrait of Henry IV, Holy Roman Emperor (r. 1084-1105) by Christoffel Jegher, c. 1631-1633. The British Museum, London.