noun (n)

• splendid or imposing in size or appearance(noun.attribute)

  Synonym:
  grandness, impressiveness, richness
  

  source: wordnet30
• the quality of being magnificent or splendid or grand(noun.attribute)

  Example:
  For magnificence and personal service there is the Queen's hotel.
  

  Synonym:
  brilliance, grandeur, grandness, splendor, splendour
  

  source: wordnet30
• The act of doing what is magnificent; the state or quality of being magnificent.(noun)

  source: webster1913