<p>Postcard pre-1930 of Potsdamer Platz with the Palast Hotel at   Hermann-Goering-Str. 12. The Palast Hotel also entrances  at  18/19 Leipziger Platz.  Posted 1934 to Great Yarmouth, England, when the Columbushaus would have been completed for almost two years.
On the right the Hotel Fuerstenhof, badly damaged in World War 2 and subsequently demolished.
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There is no sign of the Columbushaus behind the left hand pillar of the Bahnhof.  I suspect the photo was taken after demolition of the Belle Vue Hotel.  Indeed, the IPA Leipzig, the International Fur Trade exhibition took place in 1930 [Internationale Pelzfach-Ausstellung]
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/28179929@N08">Sludge G</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/sludgeulper/49960551971/">Postcard pre-1930 of Potsdamer Platz with the Palast Hotel</a>