Virgin Islands Luke Chen/Getty Images You don't need a passport to fly to St. Thomas, but you'll have a hard time believing this jaw-dropping, colorful island is technically U.S. soil. Make sure to visit Magens Bay, climb the 99 Steps in Charlotte Amalie, and marvel at the sheer...
In January, head to Cartagena, a port city on the country's Caribbean coast. You don't have to spend much to enjoy your time here — simply walking the picturesque streets is enough for most visitors. Nashville, Tennessee Bracia James/Getty Images ...