It is in his honor that the notable Dancing procession of Echternach takes place annually on Whit Tuesday. For a few centuries, the abbey would become one of northern Europe's most influential abbeys. The Codex Aureus of Echternach, an important surviving codex written entirely in gold ink, was produced here in the 11th century. The so-called Emperor's Bible and the Golden Gospels of Henry III were also produced in Echternach at this time, when production of books at the scriptorium peaked during the middle-age.