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.
A theatre hidden in the man made forest on the outskirts of Amsterdam. An impressive setting with impressive shows. Watching an interesting piece under the stars is quite a memorable experience. Further more it's a nice bike ride leading you past rowing waters, fields to play picnic in or a pancake house if you feel like something warm and sweet.