First you follow the link to the cute little Delft blue houses, and then you can click on any of the 91 bottles and find out what house it is and where. Most of them can be found in Amsterdam, but a few of them are from towns like Amersfoort, Delft, Breda and Schiedam.
I spontaneously clicked on number 81 and got ‘proeflokaal’ (roughly ‘tasting pub’) De Drie Fleschjes (The Three Bottles) in Amsterdam pictured above (here is what it looks like today). Ironically, it is a place to sample gin and have a drink.
What I thought was odd though is that there is the same house twice (11 and 23), another ‘proeflokaal’ in Amsterdam, Wijnand Fockink. I think the makers of the site made a mistake, as 90 is a much nicer number.
(Link and image: klom.com, via amsterdamadblog.com)