It surrounds la Citt del Vaticano (4)

I believe the answer is:

roma

(Other definitions for roma that I've seen before include "Travellers; Italian capital" , "Members of a nomadic people" , "capital for > gypsy men" , "Travellers, gypsies" , "Travelling people" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.