Or, Bertelsmann Unter den Linden 1, as its more common name. This building just screamed "Germany"
to me when I came across it. Unfortunately, there was significant construction for the subway extension,
so I cropped to avoid the construction clutter. Some history on this building:

"The Berlin Senate hosted an architectural contest in the summer of 1999 for the reconstruction of Berlin’s former
Stadtkommandantur (City Commandant’s Headquarters) at the historic address Unter den Linden 1. Bertelsmann
submitted a design by the Cologne-based architecture firm Thomas van den Valentyn, and won the competition."

More information at http://www.bertelsmann.com/company/corporate-center/bertelsmann-in-berlin/