Merovingians: The Once, The Present, & Future kings - The Imperial Crown of the Holy Roman Empire...a.k.a. 'Charlemagne's Crown': (Pictured: Imperial Crown of the Holy Roman Empire, kept in the Imperial Treasury
Crux gemmata - YouTube
The Da Vinci Code (Robert Langdon, #2) by Dan Brown | Goodreads
The Da Vinci Code (Robert Langdon, #2) by Dan Brown | Goodreads
Cross of Bernward - Wikidata
A Medievalist's Gaze - Peter Lang Verlag
The Da Vinci Code (Robert Langdon #2) by Dan Brown | Goodreads
Crux gemmata - Wikipedia
Flag of the Principality of Asturias, Spain : r/vexillology