Dad taking teacher around European capital (5)
I believe the answer is:
paris
'european capital' is the definition.
(I've seen this before)
'dad taking teacher around' is the wordplay.
'dad' becomes 'pa' ('pa' can be a synonym of 'dad').
'taking' means one lot of letters go next to another.
'teacher' becomes 'sir' (I've seen this before**).
'around' is a reversal indicator.
'sir' in reverse letter order is 'ris'.
'pa'+'ris'='PARIS'
(Other definitions for paris that I've seen before include "Capital of France" , "Abductor of Helen" , "City where one may see the Mona Lisa" , "captivated Helen" , "Helen's abductor" .)