The City of San Marino is the capital of the Republic of San Marino, which is recognized as the world's oldest sovereign state and constitutional republic, founded in 301 AD by a Christian stonemason named Marinus. Perched on the slopes of Mount Titano, the capital is famous for its Three Towers (Guaita, Cesta, and Montale), which are depicted on the national flag and coat of arms. San Marino is a landlocked enclave entirely surrounded by Italy. It has a unique system of government where two 'Captains Regent' are elected every six months to serve as joint heads of state, ensuring a balance of power. Despite its tiny size (61 square kilometers), the country has its own postal service and stamps, which are highly prized by collectors worldwide. During WWII, the republic maintained a policy of neutrality and provided asylum to over 100,000 refugees from Italy.