Walked over parts of reimagined Dortmund (7)
I believe the answer is:
trodden
'walked' is the definition.
(I've seen this before)
'over parts of reimagined dortmund' is the wordplay.
'over' is a reversal indicator.
'parts of' says the answer is hidden in the clue (I've seen 'part of' mean this).
'neddort' is hidden within 'reimagined dortmund'.
'neddort' reversed gives 'TRODDEN'.
(Other definitions for trodden that I've seen before include "Crushed underfoot" , "Trampled" , "Oppressed" , "Crushed under the feet" , "Heavily walked upon" .)