Although there are interesting places to visit in every corner of the globe, people flock in the thousands every year to a handful of the most popular travel destinations. The following are 10 of the most visited — add some of them to your bucket list for your retirement.

1. Rome

A city that has existed for 28 centuries, Rome has played an important role throughout its history — and still does today. A popular reason to visit (other than world-class Italian food) is to see the Colosseum: the symbol of ancient Rome. Although its construction was complete as far back as 72 CE, it’s still the largest amphitheater to ever be built.

This European capital also showcases more recent history, such as the baroque Trevi Fountain into which visitors are meant to throw a coin before they leave Rome. In addition, the microstate of the Vatican City is also located within Rome. It is home to the holiest church in the Catholic religion: Saint Peter’s Basilica, which is said to be the burial site of Saint Peter.

2. Athens

Another city packed with history is Athens. One of the oldest cities in the world, it has existed for 3,400 years — although it has only been the capital of Greece since 1834.

Many people visit specifically to see the ancient architecture, particularly the Acropolis — a citadel on a rocky outcrop that looks down on the city. The most famous building within the Acropolis is the Parthenon, which was once a temple dedicated to the goddess Athena.

3. Niagara Falls

For some natural beauty, you’ll be hard pressed to find something that rivals Niagara Falls. Located on the border between New York and Ontario, the Canadian side is more popular due to the panoramic views of the American Falls and Horseshoe Falls. There are also more opportunities for adventure here, including boat trips and hiking trails. However, the New York side has the advantage of being less crowded. With fewer tourist attractions, it offers a more tranquil experience. Plus, visitors have closeup views of the American Falls and Bridal Veil Falls.

4. Las Vegas

Las Vegas has something for everyone. The city is packed year round with visitors coming not just for the casinos but also for the shows, restaurants, spas, shopping, and unique architecture of the hotels, resorts, and attractions. The most famous spots are along the Las Vegas Strip, including the Stratosphere Tower, MGM Grand, and New York New York. Even if you’ve visited before, it’s worth another trip because the city is always changing.

5. Giza

Only one of the Seven Wonders of the World remains: the Pyramids of Giza. Built around 2670 BCE, this feat of engineering never ceases to amaze visitors. The Giza Plateau (which is open to visitors during the daytime) consists of the pyramids and the Great Sphinx, the oldest known monumental sculpture in Egypt. Visitors can also pay extra to enter any of the three pyramids. In addition, there’s a one-hour sound and light show every night, which illuminates the pyramids while the sphinx narrates their history.

6. Agra

A city in India on the banks of the Yamuna River, Agra is a popular destination due to the Taj Mahal, which was voted one of the New Seven Wonders of the World. This marble mausoleum dates back to 1631, when it was commissioned by the emperor Shah Jahan as a tomb for his wife — and, later, for him. By arriving early, it is often possible to take a photo of this iconic building complex without anyone else in the shot.

While you’re in Agra, there are several other places to visit, including Agra Fort, a bear and elephant wildlife sanctuary, and the Tomb of I’timad-ud-Daulah.

7. Paris

As an indication of Paris’s cultural importance, note that its entire historical district along the Seine is a UNESCO World Heritage Site. The city also has the Louvre — the most visited art museum in the world, likely because houses such famous pieces as the Mona Lisa and Venus de Milo.

In addition, you have the most important landmark in Paris: the Eiffel Tower, which is visible throughout the city. If you’re not afraid of heights, it’s worth taking the two elevators right to the top, where you’ll find the Champagne Bar. Alternatively, there are countless bars and restaurants back down on safe ground, where you can experience a variety of French and international cuisine.

8. Beijing

Not only is Beijing one of the most modern cities in the world, it has major historical significance. The Forbidden City, in particular, is a hugely popular tourist attraction as well as a UNESCO World Heritage Site. Between 1420 and 1924, it was the residence of the emperors of China and the center of political power in the country. Today, it is a national museum.

Dating almost as far back is the Great Wall of China, built in 1505. In Beijing, you’ll find the Badaling portion of the wall — the most visited section. Restored in 1957, it was also the first section to be opened to tourists.

9. Machu Picchu

For a glimpse of what civilization was like in 15th-century South America, take a trip to Machu Picchu, also called the Lost City of the Incas. Even though millions of people visit each year, arriving is complicated — a major reason why the citadel has managed to survive through the centuries. However, seeing the ruins set among the mountain peaks and taking in the panoramic views is well worth the effort.

Travelers typically spend at least a couple days in the Peruvian city of Cusco first (which also has its share of archaeological sites) to become accustomed to the altitude. Then, it’s either a few days’ hike along the Inca Trail or a train followed by a short bus ride to Machu Picchu itself.

10. Mount Fuji

Another destination for active travelers is Mount Fuji in Japan, which is open to hikers from early July to mid September. However, just seeing the perfect mountain may be enough. Many visitors take advantage of the observation decks in Tokyo or take a train that passes by the volcano.

For closer views, a good option is Fuji Five Lakes region, which has the added benefit of onsen: natural hot springs with traditional bathhouses. One of the most picturesque spots is Oshino Hakkai, especially during the fall for the vibrant foliage colors, spring for cherry blossom season, or even winter when the buildings are dusted with snow.

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