hough not quite discernible from ground level, a bird’s-eye view reveals the octagonal structure of the Cathedral. The octagonal shape in church architecture is significant since early Christian times. The number eight is a symbol of regeneration in Christianity, signifying the six days of creation, the Day of Rest, and a day of re-creation through the Sacrament of Baptism.
BIRD’S-EYE VIEW OF THE CATHEDRAL COMPLEX
DOMES OF THE CATHEDRAL COMPLEX
The terraced roof comprises three domes, set one above the other, two octagonal and the topmost one with four sides.
The pyramid dome skylights on the roof of the chapels are designed to flood the interiors with natural daylight.
The octagonal plan can also been seen in church architecture such as St. George’s Cathedral, Addis Ababa, Basilica of San Vitale (in Ravenna), Castel del Monte (Apulia), Zum Friedefürsten church (Germany) and a number of octagonal churches in Norway. The central space in the Aachen Cathedral, the Carolingian Palatine Chapel, has a regular octagonal floor plan. Uses of octagons in churches also include lesser design elements, such as the octagonal apse of Nidaros Cathedral.