sentences:  A section of it still survives today, albeit as a fragment incorporated into the soaring modern complex of the Sony Center.The Hotel was built between 1907 and 1908 by the Fürstengruppe (Hohenlohe, Fürstenberg und Henckel von Donnersmarck) in accordance with the plans of Otto Rehnig, architect of the nearby and similarly fated Hotel Excelsior.When it opened in 1908 the construction cost an unprecedented 23 million marks (ℳ).