
In the Brabant capital of ‘s-Hertogenbosch (the Duke’s Forest)—in the suburb of Maaspoort, the Dutch government awarded funds in 1968 to the architectural firm of Dries Kreijkamp to commission a experimental housing project.

These so-called bubble (
Bolwoningen) units were constructed from the early 1970s through to 1984, and being modular, efficient, easy to transport and requiring little in the way of a foundation were among the first environmentally-friendly mass-produced shelters created. The bubble houses are still occupied today and quite popular among the residents. Check out the link above for more images of the unique,
retro-future apartments.