It's a very small museum in the Hermitage about art made by outsiders. It's also known as 'Art Brut', a name given to it in 1972 by French artist Jean Dubuffet. It simply means that it is art made by people that don't fit in the normal life structure that humans suppose to have. Which can mean that the art is made by people who are in jail, who are ill, have a mental dissability or another way of not fitting into the community. The exhibitions are quite small, so it takes you just around an hour. And the hermitage has a nice canal view.
Located under Q-Park, Waterkant is ideal for sunny days since you can get direct sunlight until late evening. Grab a beer and a table on the terrace and enjoy sunny Amsterdam while it lasts.
Note: if you get a bit tipsy you think you see a double Guggenheim