Hasten into the city! (6)
I believe the answer is:
athens
'the city' is the definition.
(Athens is an example)
'hasten' is the wordplay.
'hasten' anagrams to 'ATHENS'.
Though, I am unsure how the anagram is indicated.
'into' acts as a link.
Can you help me to learn more?
(Other definitions for athens that I've seen before include "Two thousand and four Olympics city" , "EU capital" , "city in Greece" , "Hasten to Greek city" , "Hasten to Greece" .)