Explanation:

San Marino is the capital of the Republic of San Marino, a small independent country surrounded by Italian territory. The city, atop rugged Mount Titano, is known for its medieval old town and cobblestone streets. On the mountain’s eastern ridge, a path links 3 towers, part of the city’s ancient defensive system. These include the Castello della Guaita, a small fortress with crenellated walls enclosing a watchtower.