Greetings ! In Berlin , trainmetrotrambus services will be running all daynight , following the usual saturday timetable on the 24 th and the sunday timetable on the 25 th and 26 th . The trains throughout Germany are running but will possibly be quite crowded around christmas . You are ofc free to visit every tourist spot that is outdoor , I wouldn ' t count on indoor attractions being open on 25 th and 26 th of December , on the 24 th possibly until 45 pm . You may also check the BVG website Berlin public transport for connections . In Vienna as in many other cities , there will be extra services on New Year ' s Eve on most lines to in order to deal with the higher number of passengers . Again , check the Wiener Linien website 0 Vienna public transport for connections . Side Day Trips Every Eurocity train from Berlin to Prague stops in Dresden . You could leave the train for a nice walk through the historic city with beautiful architecture such as Frauenkirche , Semperoper etc . and continue with the next EC after 2 hours Obligatory DVB websitegb Dresden public transport . Enjoy your travel !