Inhabited since the 11th-century, what is now Kigali has been the home of Twas, Tutsis and Hutus. The city sits on a series of verdant ridges and lush valleys, and has a Muslim Quarter and a bustling market. Rwanda's capital is the site of battles that left over a million, mostly Tutsi and moderate Hutus, dead. Kigali Memorial Centre is a permanent memorial to 1994's Genocide, built on a mass grave where 250,000 are buried. Kigali City Tour Bus offers an excellent introduction to this now safe, friendly city.

Nice has a cosmpolitan Riviera vibe, and you'll enjoy exploring its fashionable boutiques and restaurants and sunning yourself on its popular beaches. (Just don't expect soft sand—these beaches have pebbles.) Walk up to Castle Hill for a beautiful view of the city, the Bay of Angels and of course, the bright blue water that gave the Cote d'Azur its name.

Billing itself as one of Denmark's friendliest towns, Kolding certainly appears welcoming—its streets lined with cherry red Danish flags that seem to be constantly waving hello. A medieval castle towers over vibrant parks that bloom with flowers and medicinal spices. On balmy days families will be grateful for SlotssøBadet, an extraordinary waterpark that's a blast for all ages.

Bangkok is full of exquisitely decorated Buddhist temples—as you go from one to the next you’ll be continually blown away by the craftsmanship and elabourate details. But if you’d rather seek enlightenment in a gourmet meal, or dance the night away, you’ll also enjoy Bangkok—the restaurant and nightclub scenes here are among the best in the world.