Rome is the capital of Italy and a special comune. Rome also serves as the capital of the Lazio region. With 2,876,051 residents in 1,285 km2 (496.1 sq. m).It is also the country’s most populated comune. It is the fourth-most populous city in the European Union by population within city limits. The Vatican City is an independent country inside the city boundaries of Rome, the only existing example of a country within a city: for this reason Rome has been often defined as capital of two states. Rome is a great walking city, and surprisingly doable. Toss your coin, then cross the Via del Corso toward the Pantheon. This building appears suddenly before you amid the hustle and bustle of modern-day Rome. The space inside the Pantheon is a perfect sphere, and the poured-concrete coffered dome is still the largest ever built.