Here are a few suggestions for your next trip from Birkenwerder(b Berlin)

In 2 hours, you can reach Berlin.

In 3 hours, you can reach Hamburg, Dresden.

In 4 hours, you can reach Poznań, Szczecin, Ústí nad Labem, Bremen, Nürnberg.

In 5 hours, you can reach Prague, Wrocław, Frankfurt am Main, Liberec, Essen, Dortmund, Most.

In 6 hours, you can reach Warsaw, Munich, Köln, Stuttgart, Düsseldorf, Kolding, Bydgoszcz, Enschede, Kladno.

In 7 hours, you can reach Amsterdam, Łódź, Odense, Pilsen, Utrecht, Liège.