Holy grail: Did you mean...?

A map in German of central Europe during the time of the Hohenstaufen Emperors, primarily showing the territories of the Holy Roman Empire and the Kingdom of Sicily. The map is a vectorised version of this...

Jerusalem, a holy city for the adherents of all three great monotheistic religions (Judaism, Christianity, and Islam) was conquered by the armies of the First Crusade in 1099 CE. The Muslims failed to halt...

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.

Illustration of an enthroned Charles the Bald, Holy Roman Emperor (r. 875-877 CE), King of West Francia (r. 843–877) and Italy (r. 875–877). Copied by G.W. Hutin, 1821, from a 9th-century manuscript...

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

Boniface cuts down holy oak of 'Jupiter' or Donar.

The 'Banner of the Holy Wounds' which was used by protesters during the Pilgrimage of Grace uprising of October 1536 CE against the reforms of the Catholic Church made by Henry VIII of England (r. 1509-1547 CE).

Equestrian portrait of Charles I of Spain aka Charles V, Holy Roman Emperor by Titian depicting Charles V at the Battle of Mühlberg in April 1547 where he defeated the Protestant forces of the Schmalkaldic...

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)

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...