Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Aachen Cathedral ' has mentioned 'Apocalypse' in the following places:
Occurrence Sentence Text Source
The original cupola mosaic was probably executed around 800 and known from Medieval sources depicted Christ as the triumphant lord of the world, surrounded by the symbols of the Four Evangelists, with the twenty-four elders from the Apocalypse of John offering their crowns to him.
The high dome gathers light from eight open-arched windows above the drum; it was originally entirely covered with a large mosaic depicting Christ Enthroned, in purple robes and surrounded by the Elders of the Apocalypse.