The Central Experimental Farm, Ottawa.

An Ottawa Citizen article, December 20, 1996.

The federal government wanted to demolish many of the Farm's 85 buildings, including the Booth Barn and Dominion Observatory. (Google: "23 Central Experimental Farm:Part 1|Heritage Ottawa.) Why?
A timeline
1953 - June - The NCC considers moving the Farm out of its urban area("Ottawa Citizen 2007-12-31/150 years of memories-PressReader.")
1970's - The head of the NCC pressures Agriculture Canada to give 700 acres of the CEF to the NCC.
1988 - 91 acres are sold to the City of Ottawa.

1998 - National Capital Commission buys the Greenbelt Farm.
2008 - Civic Hospital wanted 60 acres of CEF property.
2016 - National Capital Commission permits the Civic to build a hospital on the CEF.
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1996-1997 Annual Report of the National Capital Commission (Page 39/152)
Disposal
"In 1996-1997 the NCC succeeded in selling $1.7 million worth of non-National Interest Land Mass holdings. This total will increase when a major land disposal is completed.

CEF 1983          

CEF now.