When it comes to celebrating life in New York City's Times Square, the city's bustling streets and ever-changing displays of vibrant color are the place to go. It's no secret that New York City is expensive. Anyone wanting a breathtaking view of New York City from the Hudson River will likely have to pay upwards of $130 for a one-hour tour. Dinner for two at one of the best candlelit restaurants in New York costs $370. During public holidays, New York City hosts a variety of events, and the price and scope of events vary depending on the time of year.

Paris France

Even if it will always be the most romantic city in the world, the City of Light will burn a hole in your pocket. It's true that a Seine cruise can't compare to a New York cruise, but it's still worth a visit. The peaceful sea surrounding the area provides the ideal setting for a lovely romantic evening. With the Eiffel Tower in the background, the three-hour cruise costs $300. The Moulin Rouge is the most famous restaurant in Paris, and a three-course meal costs around $200. A romantic hotel stay costs about $660 per night. The most expensive city in the world to celebrate Valentine's Day is Paris.