Politicians John Baird, John Manley and Barry Mather wanted the Lebreton Flats to be a National Park.

The 130-acre Lebreton Flats in 1983.

 The Lebreton Flats are already protected by the designation National Interest Land Mass, and they will be owned by the citizens of Canada in perpetuity: (Google: 1988-09-15-tb-re-ncc.) The Flats are the western annex of the Parliamentary Precinct, and there are height restrictions. The only structures permitted on this land are federal museums, Library and Archives Canada, the Department of National Defence, Canada Mortgage and Housing properties, memorials, statues and property for Canada's First Nations, gardens, Canada Day celebrations and Bluesfest.

House of Commons Ottawa October 22, 1969 MP Barry Mather (New Democratic Party):

 "Is the Government of Canada giving favourable consideration to the establishment of a national park in the Lebreton Flats area?"

House of Commons Ottawa October 26, 1966 The Hon. G.J. McIlraith (Minister of Public Works) Ottawa Centre, Liberal: "The total cost of redevelopment of LeBreton Flats in the national capital, broken down into

a.) cost of acquired land and buildings, $17,791,139.37.

b.) cost of demolition, $335,000.

c.) cost of improvements to roadways, curbing, drainage, culverts, bridges and landscaping, $206,750.39.

The above amounts have been expended to date.

2.) Estimated additional costs anticipated prior to construction or other utilization of the area are as follows:

a.) $1 million for land and building acquisition.

b.) $50,000 for demolition.

c.) other costs, $500,000 for roadways;

d.) $1 million for utilities prior to scheduled occupation of portion of site for Department of Public Works for construction of Department of National Defence headquarters.

3.) The total area acquired is 145 acres, composed as follows:

a.) 56 acres expropriated,

b.) 60 acres to N.C.C. under railway relocation scheme.

c.) 29 acres reclaimed from Nepean bay.

This does not include 18 acres occupied by streets.

Lebreton is 4,450 feet or less than a mile from the Peace Tower on Parliament Hill. (The Hon. George McIlraith, Minister of Public Works, November 23, 1967, House of Commons.)

Downtown towers may strain sight lines to Parliament Hill by Joanne Chianello, CBC News, January 24, 2017: "The prospect of a 55-storey building at LeBreton Flats is leading some experts to call for a review of the protected views of Parliament Hill-policies that have not had a major overhaul since first established 20 years ago..."