Double Duty: 6 European Cities and the Best Places To Pair Them With

Part of Europe's allure is that there are so many iconic cities and diverse countries in a relatively small area. So, rather than spend all of your time in one place, why not take advantage of the proximity and double up your trip with two cities? A speedy and ever-expanding rail network means you can be sipping wine with lunch in Paris followed by evening beers in Amsterdam, without having to do the tedious airport dance. So if you have a week in Europe, make the most of the continent's tightly knit travel trails with the following pairings.