I've always been inspired by old industrial buildings like factories, but unfortunately such buildings have become rather rare in the Netherlands. At the moment you can still find some of the remains of the old harbour of Amsterdam called the ‘NDSM werf’ on the other side of the river ‘IJ,’ but this area seems to be in transition as well. For the time being the NDSM werf is a creative place where a lot of activities are taking place. The best part for me is the 'Y-helling' to enjoy the (modest) skyline of Amsterdam and to write graffiti.
The Bartolotti is perhaps one of the most beautiful Museum Houses Amsterdam has, built by someone who once was the richest man in the city, but it's a bit hidden in plain sight. These days, it is run by a group of lovely old ladies, who can't wait to offer you tea or juice. You can walk around the house like you live there.
You have to ring the doorbell to get in.
(picture from Google, by Arjan Bronkhorst)