The Stedelijk Museum holds the largest group of Kazimir Malevich paintings outside Russia, and it holds them because he never got them home. He took more than a hundred works to Berlin in 1927, was called back to Leningrad, and left them with friends. The architect Hugo Häring kept them through the Nazi campaign against modern art, and Amsterdam bought them from him in 1958. His heirs argued that they had never been Häring's to sell, and in 2008 the city settled by handing five paintings back. Whichever of the rest is hanging when you come, you are looking at what stayed.
The museum around them is two buildings joined. The red-brick house of 1895 still carries the name of Sophia Lopez Suasso, a widow whose bequest helped pay for it. You no longer go in that way: the door is now in the white extension of 2012 on the Museumplein side. The collection hangs below it on free-standing steel walls with no rooms at all, a century of art laid out in one continuous space.