The city's biggest flea market is hosted the first weekend of each month in and around a gigantic warehouse in the industrial area of NDSM in Amsterdam Noord. I love to snuff around the hundreds of stalls to find unusual props. Taking the boat to cross the IJ and leaving the old centre behind is very refreshing. Make sure to also have a drink in Noorderlicht while the sun sets.
In the ever growing conservative political scene in the Netherlands, the ADM is a reminder of the freedom and chaos that Amsterdam must have once been. It gives me my dose of dirty grittiness, something which is miss in this city in constant renovation and gentrification. Evolving around a main building on an industrial shipyard on the outskirts of town, it's an area where modern gypsies, anarchists, artists and free thinkers build their houses, park their caravans or dock their house boats. It's not entirely my scene, but I am happy to know that it's there. And they throw some amazing festivals!
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.