20. Miami, Florida
Despite being hit hard by Hurricane Irma, Miami's beaches and world-renowned party scene attracted 8.1 million visitors in 2017.
19. Mecca, Saudi Arabia
This desert city is known as the birthplace of both the Islam faith and the Prophet Muhammad, which is why millions make the pilgrimage to Mecca every year. Only Muslims are allowed to enter the city, which has counted 8.7 million visitors this year.
18. Prague, Czech Republic
A popular destination for history buffs, Prague boasts stunning baroque and gothic architecture, as well as a beautiful astronomical clock that dates back 600 years. Its Christmas Market is also one of Europe's most popular. This year, the city has seen 8.6 million visitors.
17. Guangzhou, China
It's possible that Guangzhou attracts more business than leisure travelers. It's China's third-largest city, and its proximity to Hong Kong and the South China Sea make it a major trade port. Guangzhou attracted 9.1 million visitors this year.
16. Seoul, South Korea
There's something for every traveler in Seoul — traditional Buddhist temples are found among towering skyscrapers, old teahouses, and beautiful parks. The city has seen 7.7 million visitors in 2017.
15. Istanbul, Turkey
Given its unique position between both Europe and Asia, Istanbul is a melting pot of cultures. The various empires that have ruled the city have left behind several relics, one of the most well-known being the Hagia Sophia, a Byzantine Mosque whose dome dates back to the 6th century. 8.6 million visitors have traveled to the city this year.
14. Taipei, China
Famed for its many night markets and bustling street food scene, Taipei is a great destination to explore solo. Don't miss the views from the observatory near the top of the Taipei 101 skyscraper, which dominates the city's skyline. Taipei has counted 9.3 million visitors in 2017.
13. Tokyo, Japan
Japan's capital is full of museums and temples, many of which are surrounded by serene woods and gardens. The Tsukiji Fish Market and Harajuku are popular tourist destinations that are worth the hype. This year, Tokyo has attracted 9.7 million visitors.
12. Rome, Italy
Rome is bursting with culture and history. From the Colosseum to the Roman Forum and St. Peter's Basilica, it feels like there's a sight to see around every corner, so it's no surprise that the city has attracted 9.6 million visitors this year.
11. Phuket, Thailand
Loved for its soft, sandy beaches and bright turquoise waters, Phuket is Thailand's largest island, which means there's much more to do on the island than just lounge. Its resort towns are known for their nightlife. The island has counted 12.1 million visitors this year.
10. Kuala Lumpur, Malaysia
The iconic Petronas Towers dominate Kuala Lumpur's skyline, but the city isn't all modern skyscrapers. Chinatown carries traces of the city's beginnings and the Thean Hou Temples is a gorgeous oasis from the busy city. Kuala Lumpur has attracted 12.8 million visitors.
9. Shenzhen, China
Serving as a gateway between Hong Kong and Chinese mainland, Shenzhen is a Special Economic Zone, meaning that its business and trade laws differ from the rest of the country. Besides being a business hub, the city attracts tourists eager to explore its impressive shopping malls and amusement parks. This year Shenzhen has seen 13 million visitors.
8. New York City, New York
It's no wonder that the Big Apple counted the most visitors out of any US city. New York City is the largest city in the country, and it's known for its cutting edge dining and shopping scenes, as well as its rich cultural options like The Met, MOMA, and the American Museum of Natural History. 13.1 million visitors have made it to NYC this year.
7. Paris, France
Some people call Paris the "City of Light," while others call it the "City of Love," but either way, it's renowned for its charming architecture and romantic appeal. Take a stroll along the Seine, watch the street painters near Montmartre, or picnic under the Eiffel Tower — you'll never run out of thing to do here. In 2017, Paris attracted 14.3 million visitors.
6. Dubai, United Arab Emirates
There's arguably no place as lavish as Dubai. The city is home to the tallest building in the world — the Burj Khalifa — as well as the Burj Al Arab, a sail-shaped hotel that sits on its own artificial island. Dubai saw 16 million visitors this year.
5. Macau, China
Macau has been dubbed the "Las Vegas of China" thanks to its numerous casinos and shopping malls. For over 300 years, the region was a Portuguese territory, which is why tourists will witness an intriguing mix of cultures here. Macau counted 16.3 million visitors this year.
Cheap but good food options abound throughout the hawker centers in Singapore, which boasts one of the only street food stalls to be awarded a Michelin star. Visitors are also drawn to the skyline views from the world's largest rooftop infinity pool, which sits 57 floors above street level in the Marina Bay Sands Hotel. 17.6 million people have visited the city this year.
3. London, England
Thanks to Brexit, London's prices have plummeted, turning it into an appealing option for those traveling on a budget. Big Ben, Westminster Abbey, and the Tower Bridge are just a few of the city's most iconic landmarks. London attracted 19.8 million visitors in 2017.
2. Bangkok, Thailand
Thailand's second city to make the list, Bangkok is much more of a booming metropolis than Phuket. Its network of narrow canals host colorful floating markets, and its opulent shrines are sights to see. Plus, one of Bangkok's street food stalls was just awarded a Michelin star. This year, the city has seen 23.3 million visitors.
1. Hong Kong, China
Hong Kong tops the list this year, having counted 25.7 million visitors in 2017. This densely populated city attracts millions that are either visiting for work or play. The latter take advantage of the city's many shopping malls and markets like the Temple Street Night Market.