I was at the Hamburger Bahnhof Museum on Sunday, viewing some of their paintings from the pop art movement including Andy Warhol and Roy Lichtenstein. There was also an exhibition of Rudolph Belling's sculpture. Belling's work was banned by the Nazis so he emigrated to Istanbul.
The Hamburger Bahnhof building itself is a work of art and it is a former neoclassical railway station build in the 1840s and converted to an art museum in 1996.
When I arrived in Berlin last Thursday, one of the first things I did was to buy an annual ticket for the Berlin state museums. This is a cluster of 17 museums and galleries in Berlin and the annual ticket cost just €50 to allow me visit any of the museums at any time. Absolutely brilliant value and I've already used it several times in the first four days.