Dutch city, ancient city, realistic about introduction of tourism (7)
I believe the answer is:
utrecht
'dutch city' is the definition.
(I've seen this in another clue)
'ancient city realistic about introduction of tourism' is the wordplay.
'ancient city' becomes 'ur' (ancient Sumerian city state).
'realistic' becomes 'echt' (I can't explain this - if you can you should give a lot more credence to this answer).
'about' indicates putting letters inside.
'introduction of' suggests taking the first letters.
The first letter of 'tourism' is 't'.
'ur'+'echt'='urecht'
'urecht' going around 't' is 'UTRECHT'.
Can you help me to learn more?
(Other definitions for utrecht that I've seen before include "Dutch city whose name was given to a 1713 treaty" , "The curt (anag) - city in the Netherlands" , "Dutch city, province; Seventeen-thirteen treaty" , "Dutch city where peace treaties were signed to end the 1701-14 War of the Spanish Succession" , "Its treaty gave us Gibraltar" .)