www.to-europe.com This 8 Day High Speed Rail Circle Tour: Frankfurt-Cologne-Dusseldorf-Berlin-Weimar-Erfurt-Frankfurt. Includes a 2-Day Berlin Welcome Card and a one hour Rhine Panorama Cruise in Cologne! Visit some of Germany’s most famous cities by traveling on board of the High-Speed ICE trains. Find out for yourself how history and presence have put their stamps on these metropolises, giving each one of them its very special flair. Frankfurt, city of banks, discreetly displaying its interesting history, Cologne, full of Roman and medieval sights, Berlin, history hiding everywhere in a very vibrant city, Weimar and Erfurt, both very beautiful historic cities, no longer only known by insiders.