• 
  U9253
  A FAIRLY TALL TOWER, 48,000 Miles High -  - Siah Armajani
  01.01.1969
• 
  U9953
  Temple of the western buddha (1971 Kathmedu) - Herman de Vries
  01.01.1974
• 
  U9807
  Cruzeiro Do Sul, (Southern Cross) (Crucero del Sur) 1969-70* - Cildo Meireles
  01.01.1997
• 
  U9931
  Making for Art - 100 Unsucceeded Presentation - 1995, 1996,  - Yutaka Sone
  01.01.1994
• 
  U9858
  "400" - Manfred Pernice
  01.01.1995
• 
  U9779
  Relatum (Iron Plate and Stone) - Lee Ufan
  01.01.1988
• 
  U9617
  Project pour le parc de sculpture de Vassiviére - Paul-Armand Gette
  01.07.1991
• 
  U9258
  Uncompleted 1966 - and on  - John Armleder
  01.01.1966
• 
  U9510
  Der New-Babyloner - Constant
  01.01.1997
• 
  U9988
  City Hall Tower Night Ilumination - Krysztof Wodiczko
  01.10.1987
• 
  U9665
  Unrealized Turtles 1967 - Joseph Grigely
  01.01.1967
• 
  U9591
  The World Record - General Idea
  01.01.1987
• 
  U9248
  Electronic Theater - Laurie Anderson
  14.02.1997
• 
  U9503
  NON REALIZED PROJECTS - Christo and Jeanne-Claude
  01.01.1997
• 
  U9853
  Progetto per Gerry Schum - Guiseppe Penone
  01.01.1972

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