The City of San Marino contains seven curazie: Cà Berlone, Canepa, Casole, Castellaro, Montalbo, Murata, and Santa Mustiola.

The urban heart of the city was protected by three towers: the first, Guaita, built in the 11th century, held a reputation for being impenetrable which to a great extent discouraged attacks.

Today, there is a more varied economy, including tourism, commerce, sale of postage stamps, and a small agricultural industry, although the latter is in decline.

The city is known for its long, winding cobblestoned streets, as its altitude and steep approach put it beyond the reach of the San Marino Highway.

[4] Running every fifteen minutes, the two-minute ride is renowned for its panoramic views over San Marino, the Province of Rimini, and the Adriatic Sea.

[9] During the Second World War, the line was bombed and closed,[9][10] after which its tunnels sheltered refugees during the Battles of Rimini and San Marino.

[12][13] In 2012, an 800-metre (1⁄2-mile) section was reopened as a heritage railway in the City of San Marino, running between Piazzale della Stazione and near Via Napoleone.