"The Heart of Rome" — a neighborhood stretching east to the Spanish Steps — begins at this market square. This area has narrow lanes, intimate piazzas, fanciful fountains, and some of Europe's best people-watching. During the day, you'll see bustling market action, sun-baked piazzas, and trendy fashion boutiques. But a stroll in the cool of the evening is made memorable by the romance of the Eternal City at its best, including the Trevi Fountain. Explore with my free Heart of Rome audio tour.