Expo '70 site
I believe the answer is:
osaka
'expo '70 site' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for osaka that I've seen before include "Port city of southern Honshu" , "Japanese port, on Honshu" , "Japanese metropolis" , "in east Asia" , "Kinki's capital" .)