...-†%@££@                                          @££@%†-...
....-†%@££                                          ££@%†-....
.....-†%@£                                          £@%†-.....
......-†%@                                          @%†-......
.......-†%                                          %†-.......
........-†    ††                             ††     †-........
.........-      ===============================     -.........
..........    ##  mass-production treehouse  ##     ..........
..........     ===============================      ..........
..........     ††                             ††    ..........
..........                                          ..........
..........   created in the twenty eighties as a    ..........
..........   cheap and open source way of dealing   ..........
..........   with constant floods and a rising sea  ..........
..........                  level.                  ..........
..........                                          ..........
.........- the "house" would consist of a stack of  -.........
........-†  floor modules, each a square of thirty  †-........
.......-†%  six square meters. these could be made  %†-.......
......-†%@  out of various materials such as carbon @%†-......
.....-†%@£   fiber or plastic, not necessarily the  £@%†-.....
....-†%@££           same for each floor.           ££@%†-....
...-†%@££@                                          @££@%†-...
..-†%@££@#  the house would be hung on a "mast", a  #@££@%†-..
.-†%@££@##    ridged metal pole extending between   ##@££@%†-.
..-†%@££@#  fifty and a hundred meters. a mechanism #@££@%†-..
...-†%@££@  within each floor would enable them to  @££@%†-...
....-†%@££  climb up or down the mast, together or  ££@%†-....
.....-†%@£              individually.               £@%†-.....
......-†%@                                          @%†-......
.......-†%   the lowest floor would usually have a  %†-.......
........-† loading dock, a balcony/front door, and  †-........
.........-             various ladders.             -.........
..........                                          ..........
..........       ††                        ††       ..........
..........        ==========================        ..........
..........       ††                        ††       ..........
..........                                          ..........
..........     % climate - housing - modular %      ..........
..........        % suburbs - open source %         ..........
..........                                          ..........
..........                                          ..........
.........-                                          -.........
........-†                                          †-........
.......-†%                                          %†-.......