Almost every underground station in Amsterdam has a fascinating story behind it. My favourite one is metro station ‘Weesperplein,’ because it has a hidden station underneath the actual station that was meant for the 'Singellijn.' However, that line was never build and the second station remained useless. Besides that the hidden station was also equipped to serve as a shelter during the cold war. The large doors that were meant to hermetically close the building are still visible at both ends of the platform. Other small details, like the panels in the ceiling than can be used as tables when turned around, are also silent references to the building’s former use.
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.
Jenever is a traditional Dutch spirit, sometimes called Dutch gin or wodka in English. Wynand Fockink has a distillery and tasting house right at the very hart of Amsterdam. This place is frequented by locals and tourist alike because of their delicious jenever. Be sure to try a glass of Wynand Fockink Superior. If they empty the bottle while filling your glass you're entitled to a so-called 'Amsterdammertje'; you'll have to drink your glass in one gulp and then you get a free refill.
Not a big fan of zoos and animals behind cages, but if you can spot Flamingos in the east-centre of Amsterdam, then count me in <3 ! You can actually see them while riding the bike on Plantage Middenlaan, quite a beautiful scene.
Note: De Plantage next to zoo is quite cool cafe/restaurant, with a mix of vintage style and industrial elements of the old buildings of Artis. Great atmosphere, and ideal for a more sophisticated outing.