Europe's Undeniable Allure.Europe has always had a timeless, romantic charm to it. The historic cities, fascinating cultures, delicious foods and breathtaking sights—it’s what dream vacations are made of from beginning to end. It’s no wonder that a recent study showed Europe is more popular than ever among international travel destinations. What’s even more interesting: Millennials (ages 18 to 34) show the highest interest among all age groups, with 61% reporting a desire to visit the Old World. On top of it all, there’s never been a better time to go, with an exchange rate very favorable to the dollar right now and Allure of the Seas sailing the gorgeous Mediterranean this summer, bringing the world’s largest cruise ship to Europe.