Seoul

Incheon International Airport is located in the city of Incheon, about 50 miles from downtown Seoul. The fastest way to Seoul is via the Airport Railroad Express train: It's a bargain, at under $10, and you’ll be in the heart of Seoul in precisely 43 minutes. Buses (also $10) and taxis (at least $70) are available as well, if you are prepared to battle Seoul’s legendary traffic.

The Seoul subway is vast, yet easy to navigate. You pay by distance, and most rides cost between $1 and $2. Aboveground buses roll to every corner of the city for prices that range between $.75 and $2, depending on the route. It's easy to find taxis waiting on every corner. Tip: When hailing a taxi on the street, it's more polite to flag it with your hand facing down, not up. Seoul is well connected to the rest of South Korea with excellent transportation options including high-speed trains.