Dutch programmer and data visualization expert Bert Spaan has just released an impressive update to his iconic project from 12.5 years ago. The map now displays all 11,333,878 buildings in the Netherlands, color-coded by year of construction.
The new map is significantly more detailed and modern than the 2013 version (which featured “only” 9.8 million objects). The data comes from the official BAG register (Basisregistratie Adressen en Gebouwen), maintained by the Dutch Cadastre.
The map perfectly illustrates the history of urbanization in the country: dense historic city centers, post-war housing estates, modern suburbs, and the dynamic development of recent years. Colors correspond to the year of construction — from the oldest (dark shades) to the newest (vibrant colors, including buildings constructed after 2015). We especially recommend zooming in on Amsterdam, Rotterdam, or Utrecht — the contrast between old and new architecture is striking.
Spaan’s project is not just a beautiful visualization — it is a powerful tool for spatial analysis, urban planning, and understanding how the Netherlands has changed over the centuries. “People loved that map back in 2013. Ever since then, I’ve wanted to make a better version,” the author admits.
