It is the smallest country in the world, and it is entirely surrounded by Rome, Italy. There is no need for an airport, as visitors can simply fly into Rome and then take a short train or bus ride to Vatican City.
Vatican City
Situated not very far from the Vatican City, San Marino is one of the world's oldest states. Surrounded entirely by Italy, San Marino doesn't have access to the sea. Since it's so small, it does not have an airport.
San Marino
Monaco is the world's second smallest country after Vatican City, is surrounded by France on three sides, and has no airport facility of its own. To visit Monaco you need to book a cab or take a boat after landing at France's Nice Côte d'Azur Airport.
Monaco
As the smallest country in the world to border two countries (Austria and Germany),
Liechtenstein is also without an airport. Visitors would need to enter by car, boat, or the popular rail system from nearby Swiss or Austrian rail stations.
Liechtenstein
It is located between France and Spain, doesn't have its own airport due to the mountains. The Pyrenees surround the country, with peaks reaching 3000m, making flying risky. Instead, visitors can take flights to nearby cities like Barcelona, Lérida, or Girona, within 200km.
Andorra
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