Related Clues:

• It may get in the whey
• "Gladiator" city
• "Ben-Hur" setting
• Rennin results in them
• Colosseum locale
• So-called 'Caput Mundi' ('Head of the World')
• Sour milk product
• Surrounder of the Vatican
• Billy Joel "When in ___"
• City Italian stars play
• Part of a so-called 'grand tour'
• "Coriolanus" setting
• Setting for Broadway's 'The Light in the Piazza'
• Sounds like journey from European capital
• Cooking apple named for an Ohio township