Old National Gallery

Old National Gallery, Berlin
The Old National Gallery in Berlin's Mitte district is part of the building ensemble of the Museum Island and is therefore a UNESCO World Heritage Site. Planned by Friedrich August Stüler from 1862 on behalf of King Friedrich Wilhelm IV, it was executed by Johann Heinrich Strack in the classicism and neo-Renaissance style by 1876. It is currently home to paintings and sculptures from the 19th century from the National Gallery's collection. On the outside staircase is the equestrian statue of Friedrich Wilhelm IV created by Alexander Calandrelli.
Text/Source: Wikipedia
de.wikipedia.org/wiki/Alte_Nationalgalerie

Definitely worth seeing. Should not be missing on the sightseeing tour.

One of the most beautiful buildings on the Museum Island, I think, from the upper stairs you have a very nice view of the park below and the surrounding buildings.