OT301 is a cultural centre in the former building of the Film Academy at the Overtoom. It’s a good place to get drunk, watch a movie or to eat. It's not too expensive, like most other places in Amsterdam, and the ambience is good.
The Oostvaardersdijk is huge dike that protect the polder of Flevoland from being flooded. It's near the city of Almere that was founded in 1975 on the just recovered land of the Flevopolder. It is a great place to see the skyline of Amsterdam and look out over the Markermeer, the former Zuiderzee. When you turn around you can look down in the polder on an impressive group of modern windmills, in the distance you see the city of Almere. This is Holland at it's core: endless flats with the endless skies you know from Seventeenth century painting. You can drive the Oostvaardersdijk north to Lelystad and cross the lake to Enkhuizen and back to Amsterdam. On the way you drive past Oostvaardersplassen nature reserve, a large area of marshes and wild land in the Flevopolder, where they introduced wild horses and prehistoric cattle.
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.