Upset with bad tours in European capital (8)
I believe the answer is:
budapest
'european capital' is the definition.
(capital of Hungary)
'upset with bad tours' is the wordplay.
'with' is a charade indicator (letters next to each other).
'tours' indicates an anagram (the letters roam or tour around).
'upset' put after 'bad' is 'badupset'.
'badupset' is an anagram of 'BUDAPEST'.
'in' acts as a link.
(Other definitions for budapest that I've seen before include "capital location" , "Hungarian capital" , "city of Europe" , "Capital of Hungary" , "Put beads in the European city" .)