Forbes rounded up this list of last year's most popular destinations using MasterCard's data cross-border travel and spending. We've also included some stories to help you plan in each city.
1. London
The financial heart of the United Kingdom expects 16.9 foreign visitors in 2013.
2. Paris
The CIty of Light is a beacon for tourists traveling to France, especially high rollers: the French government has created a "palace" designation for the most luxurious hotels.
3. Bangkok
The Thai boomtown draws in both adventure-seekers and sun-lovers.
4. Singapore
The lust city-state of Singapore is known for its unique cuisine, which runs the gamut from formal seated dinners with 10 courses to delicacies sold only at its outdoor markets.
5. Istanbul
New hotels in the city's Sultanahmet neighborhood are perfect for travelers looking to experience this Turkish city's unique culture.
6. Hong Kong
The bustling island is equally good for shopping and sightseeing.
7. Madrid
Spain's capital has a unique food scene and gorgeous architecture.
8. Dubai
Construction is the order of the day in this booming Middle Eastern metropolis, and each new hotel seems more luxurious than ever.
9. Frankfurt
It's no wonder Frankfurt, where IMEX is held each year, cracked the top 10.
10. Kuala Lumpur
This gorgeous Malaysian city had more than 8 million visitors in 2012.