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 map from Professor G. Droysens...

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.

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...

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 League, 1548. Museo del Prado...

The facade of the Gothic Cathedral of the Holy Cross, Orléans, France. 13-16th century CE.

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

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 of the Gospels. The British Museum, London...

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)

Illustration of an enthroned Lothar I, Holy Roman Emperor (r. 840-855), King of Middle Francia (Lotharingia) and Italy (r. 843-855). Copied by G.W. Hutin, 1821, from a 9th-century manuscript of the Gospels. The British Museum, London.

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).