Berlin Ostbahnhof (translates from German as Berlin East Station) is a mainline railway station in Berlin, Germany. It is in Friedrichshain, now part of Friedrichshain-Kreuzberg district, and has undergone several name changes in its history. It was known as Berlin Hauptbahnhof from 1987 to 1998, a name now applied to Berlin's new central station. Alongside Berlin Zoologischer Garten station it was one of the city's two main stations; however, it has declined in significance since the opening of the new Hauptbahnhof on 26 May 2006, and many mainline trains have been re-routed through the new Tiergarten tunnels, bypassing the Ostbahnhof.