Not really a spot, but definitely the place to be when it comes to your design magazines subscriptions. Bruil & van de Staaij is specialized in design magazines and architecture magazines. From Novum, IdN, and Slanted to Mark, MacGuffin and The Plant.
TIP: Find their stand at the international book market taking place each year in Deventer (NL) on the first Sunday of August. There you can get a lot of back issues of your favorite magazines for very low prices. Bring a sturdy bag!