There are many remote areas in the world that can only be reached by plane. It’s impossible to imagine holidaying in every one of these places, except Macquarie Island, halfway between Antarctica and New Zealand, where penguins are more numerous than humans.

You might not be aware, however, that there are five countries in mainland Europe you cannot reach by plane.

If you want to visit every country in Europe, these five countries are free of flight.

Here are the details on how you can travel to them.

5. Vatican City: The religious center of Italy

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The Vatican City, located in the heart Rome is the world’s smallest nation. It would be difficult to fit an airport on this 44-hectare religious mecca. The microstate can be reached from Roma Termini (the largest train station in Rome), in 35 minutes.

You can travel from Spain to Rome in 24 hours by ferry and connecting train. If you drive, you can go along the French Riviera to reach Vatican City in 13 hours.

You should also visit St Peter’s Basilica (a beautiful domed structure from the Renaissance period that is the world’s biggest church).

4. Monaco: The playground of the famous and wealthy

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The Principality of Monaco is a sovereign city-state located just off the coast of Nice, South France. It is also the second-smallest country in the world. Although the French Riviera is famous for its luxurious casinos, fast cars, and wealthy inhabitants, it does not have an airport due to its small size.

Many of the residents of Nice Cote d’Azur, including many Formula One drivers, might arrive in private jets. However, they must fly to Nice Cote d’Azur Airport which is located just 30 km down the coast.

You can travel to Cannes or Nice by boat, and then enjoy the beautiful coastline.

3. Andorra, a tiny country at the heart of Pyrenees

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Andorra, a tiny landlocked state located in the Pyrenees Mountains, is nestled between France and Spain. It is known for its ski resorts. There are plenty of things to do in the summer, with 90 percent of Andorra being green space. It boasts numerous horseback trails and mountain lakes, as well as the longest alpine toboggan track in the world.

It boasts a variety of horseback trails and mountain lakes, as well as the longest alpine-toboggan run in the world.

Although Andorra is the sixth-smallest country in Europe, it doesn’t have an airport. However, it is easy to reach from France or Spain. You can drive or take the train from Paris to Andorra in just eight hours.

There is a bus that will take you from Barcelona to the airport in just over three hours.

2. Liechtenstein: A peaceful place to escape it all

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The fourth-smallest country in Europe is Liechtenstein, a German-speaking country that lies between Austria and Switzerland in Alps. This tiny state is one of Europe’s least visited, making it a great place to relax in the mountains.

It doesn’t have an airport so it is best to travel by train. You can travel from Berlin to Vienna in just over ten hours. From Vienna, it will take seven hours and you don’t need to change trains.

Enjoy some ribel, Liechtenstein’s national dish, made from cornmeal and semolina.

Enjoy some ribel, Liechtenstein’s national dish, while you’re there. It is made from cornmeal and semolina.

1. San Marino: A microstate at the foot of a mountain

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San Marino, a tiny country located in the north-east region of Italy is the fifth-smallest and oldest republic in the world. The microstate, which is located on Mount Titano’s slopes, measures just 13 km in length at its longest point. Its historic centre has been designated UNESCO World Heritage Site.

Visitors can travel to the microstate by train or bus from Rome, which takes just over five hours. You’re sure to see stunning scenery, no matter what you do.

Visit the three fortresses on the mountain that protect it, including Rocca Guaita (built in the 11th Century).