Cedric Price: from the Generator: White Oak, Florida series, 1978-80 Massimo Scolari's total Pink Floyd metaphysical fantasy Addio Melampo,1975
Ettore Sottsass' The Planet as Festival: Gigantic Work, Panoramic Road with View on the Irrawaddy Rivel and the Jungle 1972-73
and The Planet as Festival: Study for Design of a Stadium to Watch the Stars 1972-73
Superstudio's super Continuous Monument: New York Extrusion, 1969
Paul Rudolph's Elements of the Vertical City, Rome 1965-67
and naturally Ron Herron's Walking City series.
It's funny how the works from this period have gone from seeming very important to looking a bit pretentious or even simplistic and then now they seem hyper-complex, political and very fresh indeed.