Nestled at the foot of the Black Forest in South Germany, Baden-Baden is a chic destination for those who fancy a dip in its famous salt- and radon-rich thermal hot springs. The town has been a popular destination for so long that it's starting to show its age, but not to worry. It's still very classy, picturesque and well-maintained. (The Dame Julie Andrews of German spa towns, if you will.) Sporty types will find an abundance of opportunities to enjoy golf, tennis, horseback riding and skiing nearby in winter.