If you are a serious globe-trotter, you must do a round-the-world trip. Prices can range from as little as $3000 for a coach seat to see cities on 3 different continents or fly 26,000 miles to over $11,000 for a first class trip to 6 continents or 39,000 miles. A good round-the-world ticket will have almost no advance purchase clause and is valid for a year after first using it. Also the ticket should be changeable en route with no penalty for changing flights and only a small fee for adding stops. Before you book your getaway, check out www.oneworld.com and www.staralliance.com.