After restoration adore old place, fabulous (2,6)
I believe the answer is:
el dorado
'place fabulous' is the definition.
(mythical city of gold)
'after restoration adore old' is the wordplay.
'after restoration' indicates anagramming the letters (letters fixed or restored).
'adore'+'old'='adoreold'
'adoreold' with letters rearranged gives 'EL DORADO'.
(Other definitions for el dorado that I've seen before include "Golden land imagined by the Spanish explorers of America" , "One who can't give something up" , "Fabled wealthy place" , "Lead door (anag) - the land of gold!" , "'Imaginary place of great wealth and opportunity (2,6)'" .)