The Vatican City is unique due to the country's position as an urban, landlocked enclave of Rome, Italy. With an area of 49 hectares, and a border with Italy of 3.5 km (2.2 mi), it is the world's smallest independent state. Outside the Vatican City, thirteen buildings in Rome and Castel Gandolfo enjoy extraterritorial rights. The country contains no major natural resources, and no known natural hazards other than those that affect Rome in general, such as earthquakes.