8. Vatican City (Holy See in Italy)
Vatican City stands as the world’s smallest independent state, completely enclosed by the city of Rome. Home to the Holy See, it serves as the spiritual and administrative heart of the Catholic Church. Its sovereignty was formalized through the Lateran Treaty of 1929, resolving centuries of disputes between the papacy and the Italian state. The Vatican’s existence as an enclave not only reflects unique religious significance but also the enduring complexity of church-state relations in European history.
