Choosing a time of the year is also very important. All of Europe will have lower airfares from November through March, but keep in mind that this time of year can be very cold in many countries. Companies that offer escorted tours many times will not offer dates of travel for winter months. Better months are April, May, September and October. Weather conditions are better and prices are not as high as for summer travel.
Many people feel more comfortable with a tour.
Acquire brochures from any travel agency or direct from the tour operator. If you prefer to be more flexible, then design your own tour. Travel within Europe can be done either by automobile or by train. Autos should be rented prior to departing the U.S. for better prices. Rail travel is a wonderful means of transportation and one used by Europeans as well as tourists.