Ah, yes, there is another tiny state within what we think of as Italy: San Marino. No more than 24 sq. mi. (64 sq km) and about 30,000 inhabitants, this tiny state which claims to have been founded in the year 301 AD has been known for duty free shopping more than anything else. While I am not claiming to have explored every corner of this state, there was not much to it for me to recommend a visit – unless you are checking states of the world
The basilica of the city of San Marino, capital of the state of San Marino (!), is a simple classical (or neoclassical) style structure dating from the 1830s. A church has been located at this site since the founding of the state in the 4th century and the remains of St. Marinus (after which the state is named) are buried under the basilica.