Very surprised these days to go round part of Hampton Court gardens (6)
I believe the answer is:
amazed
'very surprised' is the definition.
(I've seen this before)
'these days to go round part of hampton court gardens' is the wordplay.
'these days' becomes 'AD' (as in Anno Domini, after Christ).
'to go round' means one lot of letters goes inside another.
'part of hampton court gardens' becomes 'maze' (Hampton Court gardens contain a maze).
'ad' placed around 'maze' is 'AMAZED'.
(Other definitions for amazed that I've seen before include "Greatly surprised or astonished" , "Astonished, astounded" , "Greatly surprised and impressed" , "Dumbfounded" , "Flabbergasted" .)