The city council has been working on the the Singel, an old Amsterdam canal, for ages. I walk past the worksite frequently and wondered what was taking so long.
Turns out there has been an archeological project, as part of Amsterdam’s medieval city wall was discovered when the 19th-century stone layer was removed revealing 27 large stones. It’s the first time that any of the city wall has been discovered in its original state.
There’s a short article on the City Council website, only available in Dutch .
The wall appears on the oldest map of Amsterdam by Cornelis Anthonisz which dates from 1538.
Here’s an extract from the city council’s article (translation mine);
The site involves 27 large stone from the medieval city wall from the year 1480. These stones were below the water and were only visible after a layer of 19th century stone was removed during the restoration. This wall is also mentioned in the oldest city map of Amsterdam by Cornelis Anthonisz… It is the first time that a portion of the city wall has been found in original condition. Although there are a few loose stones known to have come from the old city wall built into the wall of the Geldersekade.