Streetmuseum is a smart phone app that shows photo’s from the past, on location, in Amsterdam and Noord Holland. So if you are, for instance, on the Nieuwmarkt in the center of Amsterdam, you open the app, point your phone on a building and a historic photo from that same building will be shown (if available). The app’s map shows from which locations photo’s are available.

You can download the app for free:
iPhone
Android

Tip: download the information about Amsterdam (or any other city you want to visit in Noord Holland) at home, so you don’t have to do it when you’re on location.