- Dating from 301 C.E., San Marino is the oldest republic in the world, and has the oldest constitution in the world, enacted in 1600
- A person or persons from San Marino is called Sanmarinese (singular and plural)
- San Marino is a member of the United Nations, but not the European Union, though the Euro is the official currency
- Within San Marino lie the capital of the same name and eight villages
- Tourism accounts for 50% of San Marino’s GDP
- There are no border formalities to enter or exist San Marino and if you’d like your passport stamped as a souvenir, there’s a 5-euro charge
