Answer:

rome

Answer	Crossword Clue
ROME	"When in .. ..."
ROME	Capitoline Museum site
ROME	Colosseum site

ROME	Eternal City of seven hills
ROME	Claudius's domain
ROME	The Eternal City
ROME	Italian city where the fictional Lizzie McGuire becomes a pop star
ROME	"Tosca" setting
ROME	End of all roads?
ROME	Caesarian section?
ROME	Spanish Steps locale

ROME	Forum site
ROME	Apple variety
ROME	Round red apple
ROME	Baking-apple variety
ROME	"Coriolanus" setting
ROME	City on the Tiber
ROME	Piazza Navona site
ROME	Where many Vespas buzz

ROME	Its construction took at least 25 hours
ROME	Seven Hills city
ROME	"The city of visible history": George Eliot
ROME	Woollcott's "While ... Burns"
ROME	"The Eternal City"
ROME	Spanish Steps city
ROME	Capital where one can see the Spanish Steps
ROME	Capital on the Tiber

ROME	"La Dolce Vita" setting
ROME	Appian Way terminus
ROME	Quirinal Palace site
ROME	Italy's capital
ROME	Powerful empire, once
ROME	Tiber River capital
ROME	European tourist mecca
ROME	Long-term building project, so it's said

ROME	Where all roads lead?
ROME	Home of the Circus Maximus
ROME	1960 Summer Olympics site
ROME	It wasn't built in a day
ROME	"I, Claudius" setting