Where to see the time ebbing away (3,3)
I believe the answer is:
big ben
'where to see the time' is the definition.
(Westminster Palace clock tower)
'ebbing away' is the wordplay.
'away' indicates an anagram (letters move away from their original places).
'ebbing' with letters rearranged gives 'BIG-BEN'.
(Other definitions for big ben that I've seen before include "Parliament's bell" , "Timekeeper" , "London landmark" , "Great clock-tower in Westminster" , "Nickname of the Great Bell of the Palace of Westminster" .)