"Concrete Village" — a 1920s housing estate in Amsterdam-Oost built as a large-scale experiment in concrete construction. The city wanted to test whether concrete could replace brick as a cheaper, faster building material, so they commissioned nine different architects to each design a block using different concrete techniques. The result is a neighbourhood where every street looks slightly different but shares the same experimental spirit.
The experiment was only a partial success — some of the concrete deteriorated badly, and brick remained dominant in Amsterdam — but Betondorp survives as a charming, quiet residential area with a village-like atmosphere unusual for Amsterdam. The streets are named after famous Dutch cultural figures (Breitnerstraat, Heijermansstraat). Johan Cruyff, the legendary footballer, grew up here. Worth a wander if you're interested in architecture or urbanism, though it is well outside the usual tourist routes. Tram 9 from Centraal Station.