The Jolly Joker
The Jolly Joker is a coffeeshop where they sell cannabis as well as space cake. They are located on the Nieuwmarkt, right on the corner with the Zeedijk where you can find China Town.
The Jolly Joker opened up in 1981 and looks more like an old Dutch bar than a regular coffeeshop, which is part of it's charm. But according to many people they sell some of the best weed you can get.