Over the River was an unrealized installation artwork by Christo and Jeanne-Claude that would have suspended silver fabric over six miles of Colorado's Arkansas River. Artsy described the work as the duo's most notable unrealized work.
References
Further reading
Norton, Anna Belle Wilder. "Site-Specific Art Gets a Bum Wrap: Illustrating the Limitations of the Visual Artists Rights Act of 1990 Through a Study of Christo and Jeanne-Claude's Unique Art ." Cumberland Law Review, vol. 39, no. 3, 2008-2009, pp. 749-784. HeinOnline, https://heinonline.org/HOL/P?h=hein.journals/cumlr39&i=755 .
"The Art of Negotiation." Fletcher Forum of World Affairs, vol. 33, no. 2, Fall 2009, pp. 29-36. HeinOnline, https://heinonline.org/HOL/P?h=hein.journals/forwa33&i=169 .