File:Jamsil Apartment Complex Phase 5 (5460805782).jpg

Jamsil (蠶室, "Silk Room") used to be a floodplain where silkworms were raised. In the 1960s, to cope with Seoul's population growth, the floodplain was filled, and the government developer, Korea Housing Authority, started building apartments there.

Unlike Phases 1-4 which were coal-fired 5-story buildings with no elevator (and lucky to have indoor plumbing), Phase 5, built in the mid-1970s and standing 15 stories tall, was state-of-the-art for its time, with elevators, heating via hot water piped in from a central boiler plant, and for those few lucky enough to own a private car, ample parking (woefully inadequate today, of course).