While some parents trust their mature teens to travel on their own in Europe, many others opt for an organized tour. There are countless tour operators that specialize in teen travel. Some of these companies offer tours that take in main attractions, while others are honed for a specific interest such as theater or learning a language.
For people 25 years old and younger, Eurail offers youth passes that are 35 percent cheaper than an adult ticket. These passes come in different tiers that offer different access, but most give your teenager the freedom to travel throughout various countries in the European Union.
For most of the early 2000s, the Euro performed better than the weak dollar, making travel to Europe somewhat expensive for Americans. However, during 2010, the Euro's value tumbled 17 percent, making travel to Europe cheaper for Americans, according to CNN.com.