This is an amazing museum, featuring "outsider art." Truly one of the most outrageous, interesting art museums you will ever visit.
Outsider art is art by those traditionally excluded from society and therefore the "Art World." When we went, there was an exhibit of art by senior citizens, but you will see work by the institutionalised, the old, and the excluded. The museum is full of beautiful, complex canvases that have been worked on for years. It features art of every kind depicting end-of-the-world prophesizing, lonely musings, worlds filled with darkness and with light.
Traditional art galleries look bland and boring after this.