Stately pleasure-dome site (6)
I believe the answer is:
xanadu
'stately pleasure-dome site' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for xanadu that I've seen before include "ideal place" , "Winter palace of the Kubla Khan, according to Coleridge" , "Where Kublai Khan built his pleasure-dome" , "Kubla Khan's pleasure dome site (Coleridge)" , "Idealised place of great luxury" .)